diff --git a/BUILD.gn b/BUILD.gn
index 15ad366..ae6a832 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/modules.gni")
 import("$dir_pw_build/host_tool.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_unit_test/test.gni")
diff --git a/docs/BUILD.gn b/docs/BUILD.gn
index d89dc6c..d13db7e 100644
--- a/docs/BUILD.gn
+++ b/docs/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_docgen/docs.gni")
 pw_doc_group("core_docs") {
   inputs = [
diff --git a/legacy_target.gni b/legacy_target.gni
deleted file mode 100644
index 3519108..0000000
--- a/legacy_target.gni
+++ /dev/null
@@ -1,15 +0,0 @@
-# Copyright 2020 The Pigweed Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not
-# use this file except in compliance with the License. You may obtain a copy of
-# the License at
-#
-#     https://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations under
-# the License.
-
-import("//build_overrides/pigweed.gni")
diff --git a/pw_allocator/BUILD.gn b/pw_allocator/BUILD.gn
index c826322..93b274e 100644
--- a/pw_allocator/BUILD.gn
+++ b/pw_allocator/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_unit_test/test.gni")
diff --git a/pw_assert_basic/BUILD.gn b/pw_assert_basic/BUILD.gn
index b885a90..12ddf2e 100644
--- a/pw_assert_basic/BUILD.gn
+++ b/pw_assert_basic/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
 config("default_config") {
diff --git a/pw_bloat/BUILD.gn b/pw_bloat/BUILD.gn
index db76014..2ae952c 100644
--- a/pw_bloat/BUILD.gn
+++ b/pw_bloat/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
 import("bloat.gni")
diff --git a/pw_bloat/bloat.gni b/pw_bloat/bloat.gni
index 69aa222..ced1f0d 100644
--- a/pw_bloat/bloat.gni
+++ b/pw_bloat/bloat.gni
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/python_script.gni")
 declare_args() {
   # Path to the Bloaty configuration file that defines the memory layout and
diff --git a/pw_bloat/examples/BUILD.gn b/pw_bloat/examples/BUILD.gn
index 4d2c3d3..3d59c1f 100644
--- a/pw_bloat/examples/BUILD.gn
+++ b/pw_bloat/examples/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("../bloat.gni")
 pw_toolchain_size_report("simple_bloat_loop") {
   base_executable = {
diff --git a/pw_boot_armv7m/BUILD.gn b/pw_boot_armv7m/BUILD.gn
index 7ca4082..38b3a0e 100644
--- a/pw_boot_armv7m/BUILD.gn
+++ b/pw_boot_armv7m/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/linker_script.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
diff --git a/pw_build/BUILD.gn b/pw_build/BUILD.gn
index 7e9ec54..cf61010 100644
--- a/pw_build/BUILD.gn
+++ b/pw_build/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_docgen/docs.gni")
 config("colorize_output") {
   cflags = [
diff --git a/pw_build/defaults.gni b/pw_build/defaults.gni
index 936015e..59c6d69 100644
--- a/pw_build/defaults.gni
+++ b/pw_build/defaults.gni
@@ -14,8 +14,6 @@
 
 # gn-format disable
 import("//build_overrides/pigweed.gni")
-
-import("$dir_pigweed/legacy_target.gni")
 declare_args() {
   # Default configs and dependencies targets provided by the toolchain. These
   # are applied to all of the pw_* target types. They are set from a toolchain's
diff --git a/pw_build/facade.gni b/pw_build/facade.gni
index 06a77bf..a9b3d3a 100644
--- a/pw_build/facade.gni
+++ b/pw_build/facade.gni
@@ -14,7 +14,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/python_script.gni")
 import("$dir_pw_build/target_types.gni")
 
diff --git a/pw_build/linker_script.gni b/pw_build/linker_script.gni
index c6e0360..ba4a4d8 100644
--- a/pw_build/linker_script.gni
+++ b/pw_build/linker_script.gni
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/exec.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_toolchain/generate_toolchain.gni")
diff --git a/pw_build/python_script.gni b/pw_build/python_script.gni
index 1500cc4..a8f1782 100644
--- a/pw_build/python_script.gni
+++ b/pw_build/python_script.gni
@@ -15,8 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
-
 # Defines an action to run a Python script.
 #
 # This wraps a regular Python script action with an invocation of a script-
diff --git a/pw_checksum/BUILD.gn b/pw_checksum/BUILD.gn
index b04494d..bfdd947 100644
--- a/pw_checksum/BUILD.gn
+++ b/pw_checksum/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_unit_test/test.gni")
diff --git a/pw_cli/BUILD.gn b/pw_cli/BUILD.gn
index 956e5f7..601472c 100644
--- a/pw_cli/BUILD.gn
+++ b/pw_cli/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_docgen/docs.gni")
 pw_doc_group("docs") {
   sources = [ "docs.rst" ]
diff --git a/pw_containers/BUILD.gn b/pw_containers/BUILD.gn
index 09a9cb4..b637bd8 100644
--- a/pw_containers/BUILD.gn
+++ b/pw_containers/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_unit_test/test.gni")
diff --git a/pw_docgen/BUILD.gn b/pw_docgen/BUILD.gn
index 2784482..43d6db4 100644
--- a/pw_docgen/BUILD.gn
+++ b/pw_docgen/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("docs.gni")
 pw_doc_group("docs") {
   sources = [ "docs.rst" ]
diff --git a/pw_docgen/docs.gni b/pw_docgen/docs.gni
index 593dc11..9437878 100644
--- a/pw_docgen/docs.gni
+++ b/pw_docgen/docs.gni
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/input_group.gni")
 import("$dir_pw_build/python_script.gni")
 declare_args() {
diff --git a/pw_doctor/BUILD.gn b/pw_doctor/BUILD.gn
index c7e5cf3..4ad8f50 100644
--- a/pw_doctor/BUILD.gn
+++ b/pw_doctor/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_docgen/docs.gni")
 pw_doc_group("docs") {
   sources = [ "docs.rst" ]
diff --git a/pw_env_setup/BUILD.gn b/pw_env_setup/BUILD.gn
index 956e5f7..601472c 100644
--- a/pw_env_setup/BUILD.gn
+++ b/pw_env_setup/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_docgen/docs.gni")
 pw_doc_group("docs") {
   sources = [ "docs.rst" ]
diff --git a/pw_fuzzer/BUILD.gn b/pw_fuzzer/BUILD.gn
index 4d8d4ec..6b67150 100644
--- a/pw_fuzzer/BUILD.gn
+++ b/pw_fuzzer/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_fuzzer/fuzzer.gni")
diff --git a/pw_fuzzer/fuzzer.gni b/pw_fuzzer/fuzzer.gni
index 42dbed9..101d4b1 100644
--- a/pw_fuzzer/fuzzer.gni
+++ b/pw_fuzzer/fuzzer.gni
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_toolchain/host_clang/toolchains.gni")
 import("$dir_pw_unit_test/test.gni")
 
diff --git a/pw_kvs/BUILD.gn b/pw_kvs/BUILD.gn
index df0020d..ea1a326 100644
--- a/pw_kvs/BUILD.gn
+++ b/pw_kvs/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_unit_test/test.gni")
diff --git a/pw_log_basic/BUILD.gn b/pw_log_basic/BUILD.gn
index cfeb7df..84fad72 100644
--- a/pw_log_basic/BUILD.gn
+++ b/pw_log_basic/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
 config("default_config") {
diff --git a/pw_log_tokenized/BUILD.gn b/pw_log_tokenized/BUILD.gn
index 543f789..28eb08c 100644
--- a/pw_log_tokenized/BUILD.gn
+++ b/pw_log_tokenized/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_tokenizer/backend.gni")
diff --git a/pw_minimal_cpp_stdlib/BUILD.gn b/pw_minimal_cpp_stdlib/BUILD.gn
index eb4a97d..541541d 100644
--- a/pw_minimal_cpp_stdlib/BUILD.gn
+++ b/pw_minimal_cpp_stdlib/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_unit_test/test.gni")
diff --git a/pw_module/BUILD.gn b/pw_module/BUILD.gn
index c7e5cf3..4ad8f50 100644
--- a/pw_module/BUILD.gn
+++ b/pw_module/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_docgen/docs.gni")
 pw_doc_group("docs") {
   sources = [ "docs.rst" ]
diff --git a/pw_polyfill/BUILD.gn b/pw_polyfill/BUILD.gn
index 743c47c..737551c 100644
--- a/pw_polyfill/BUILD.gn
+++ b/pw_polyfill/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_unit_test/test.gni")
diff --git a/pw_preprocessor/BUILD.gn b/pw_preprocessor/BUILD.gn
index 6bf9dec..f8ca773 100644
--- a/pw_preprocessor/BUILD.gn
+++ b/pw_preprocessor/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_unit_test/test.gni")
diff --git a/pw_presubmit/BUILD.gn b/pw_presubmit/BUILD.gn
index e655a38..abf0562 100644
--- a/pw_presubmit/BUILD.gn
+++ b/pw_presubmit/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_docgen/docs.gni")
 pw_doc_group("docs") {
   sources = [ "docs.rst" ]
diff --git a/pw_protobuf/BUILD.gn b/pw_protobuf/BUILD.gn
index 029203b..a34c0c8 100644
--- a/pw_protobuf/BUILD.gn
+++ b/pw_protobuf/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/input_group.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
diff --git a/pw_protobuf/size_report/BUILD.gn b/pw_protobuf/size_report/BUILD.gn
index 1cf45b2..9bccccd 100644
--- a/pw_protobuf/size_report/BUILD.gn
+++ b/pw_protobuf/size_report/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_bloat/bloat.gni")
 _decoder_full = {
   deps = [
diff --git a/pw_protobuf_compiler/proto.gni b/pw_protobuf_compiler/proto.gni
index 197cacc..48336f6 100644
--- a/pw_protobuf_compiler/proto.gni
+++ b/pw_protobuf_compiler/proto.gni
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/input_group.gni")
 import("$dir_pw_build/python_script.gni")
 import("$dir_pw_build/target_types.gni")
diff --git a/pw_result/BUILD.gn b/pw_result/BUILD.gn
index c14c939..bb4ec26 100644
--- a/pw_result/BUILD.gn
+++ b/pw_result/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_unit_test/test.gni")
diff --git a/pw_ring_buffer/BUILD.gn b/pw_ring_buffer/BUILD.gn
index 037bc2e..27a3fa8 100644
--- a/pw_ring_buffer/BUILD.gn
+++ b/pw_ring_buffer/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_unit_test/test.gni")
diff --git a/pw_rpc/test_impl/BUILD.gn b/pw_rpc/test_impl/BUILD.gn
index 7c044cb..3c050a8 100644
--- a/pw_rpc/test_impl/BUILD.gn
+++ b/pw_rpc/test_impl/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_unit_test/test.gni")
 config("config") {
diff --git a/pw_span/BUILD.gn b/pw_span/BUILD.gn
index 859cb48..737f6f5 100644
--- a/pw_span/BUILD.gn
+++ b/pw_span/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_unit_test/test.gni")
diff --git a/pw_status/BUILD.gn b/pw_status/BUILD.gn
index 9ce40c8..cf13386 100644
--- a/pw_status/BUILD.gn
+++ b/pw_status/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_unit_test/test.gni")
diff --git a/pw_stream/BUILD.gn b/pw_stream/BUILD.gn
index d510781..dfb5c57 100644
--- a/pw_stream/BUILD.gn
+++ b/pw_stream/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_unit_test/test.gni")
diff --git a/pw_string/BUILD.gn b/pw_string/BUILD.gn
index 0e1165f..c657cee 100644
--- a/pw_string/BUILD.gn
+++ b/pw_string/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_bloat/bloat.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
diff --git a/pw_string/size_report/BUILD.gn b/pw_string/size_report/BUILD.gn
index 7fcce7a..8307f8f 100644
--- a/pw_string/size_report/BUILD.gn
+++ b/pw_string/size_report/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 pw_executable("single_write_snprintf") {
   sources = [ "format_single.cc" ]
diff --git a/pw_sys_io_baremetal_lm3s6965evb/BUILD.gn b/pw_sys_io_baremetal_lm3s6965evb/BUILD.gn
index 15255e2..b6cec70 100644
--- a/pw_sys_io_baremetal_lm3s6965evb/BUILD.gn
+++ b/pw_sys_io_baremetal_lm3s6965evb/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
 pw_source_set("pw_sys_io_baremetal_lm3s6965evb") {
diff --git a/pw_sys_io_stdio/BUILD.gn b/pw_sys_io_stdio/BUILD.gn
index 135b65a..d01b93e 100644
--- a/pw_sys_io_stdio/BUILD.gn
+++ b/pw_sys_io_stdio/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
 pw_source_set("pw_sys_io_stdio") {
diff --git a/pw_target_runner/BUILD.gn b/pw_target_runner/BUILD.gn
index b06d0cd..2aa53af 100644
--- a/pw_target_runner/BUILD.gn
+++ b/pw_target_runner/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_protobuf_compiler/proto.gni")
 pw_doc_group("docs") {
diff --git a/pw_target_runner/go/BUILD.gn b/pw_target_runner/go/BUILD.gn
index f2f780a..fd1a8b9 100644
--- a/pw_target_runner/go/BUILD.gn
+++ b/pw_target_runner/go/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/go.gni")
 import("$dir_pw_build/host_tool.gni")
 import("$dir_pw_docgen/docs.gni")
diff --git a/pw_target_runner/go/src/pigweed.dev/pw_target_runner/BUILD.gn b/pw_target_runner/go/src/pigweed.dev/pw_target_runner/BUILD.gn
index 946f356..31619cf 100644
--- a/pw_target_runner/go/src/pigweed.dev/pw_target_runner/BUILD.gn
+++ b/pw_target_runner/go/src/pigweed.dev/pw_target_runner/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/go.gni")
 pw_go_package("pw_target_runner") {
   sources = [
diff --git a/pw_target_runner/go/src/pigweed.dev/pw_target_runner_client/BUILD.gn b/pw_target_runner/go/src/pigweed.dev/pw_target_runner_client/BUILD.gn
index 6c2fbfa..f576b6e 100644
--- a/pw_target_runner/go/src/pigweed.dev/pw_target_runner_client/BUILD.gn
+++ b/pw_target_runner/go/src/pigweed.dev/pw_target_runner_client/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/go.gni")
 pw_go_package("pw_target_runner_client") {
   sources = [ "main.go" ]
diff --git a/pw_target_runner/go/src/pigweed.dev/pw_target_runner_server/BUILD.gn b/pw_target_runner/go/src/pigweed.dev/pw_target_runner_server/BUILD.gn
index 87f1940..cf1ea2a 100644
--- a/pw_target_runner/go/src/pigweed.dev/pw_target_runner_server/BUILD.gn
+++ b/pw_target_runner/go/src/pigweed.dev/pw_target_runner_server/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/go.gni")
 pw_go_package("pw_target_runner_server") {
   sources = [ "main.go" ]
diff --git a/pw_tokenizer/BUILD.gn b/pw_tokenizer/BUILD.gn
index 1c967dd..21cc779 100644
--- a/pw_tokenizer/BUILD.gn
+++ b/pw_tokenizer/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/facade.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
diff --git a/pw_toolchain/BUILD.gn b/pw_toolchain/BUILD.gn
index f74d905..314f335 100644
--- a/pw_toolchain/BUILD.gn
+++ b/pw_toolchain/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_docgen/docs.gni")
 import("arm_gcc/toolchains.gni")
 import("generate_toolchain.gni")
diff --git a/pw_toolchain/arm_gcc/BUILD.gn b/pw_toolchain/arm_gcc/BUILD.gn
index fcf5d18..1379131 100644
--- a/pw_toolchain/arm_gcc/BUILD.gn
+++ b/pw_toolchain/arm_gcc/BUILD.gn
@@ -15,9 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
-import("$dir_pigweed/modules.gni")
-
 # Disable obnoxious ABI warning.
 #
 # GCC 7.1 adds an over-zealous ABI warning with little useful information
diff --git a/pw_toolchain/arm_gcc/toolchains.gni b/pw_toolchain/arm_gcc/toolchains.gni
index beb2509..d1b890b 100644
--- a/pw_toolchain/arm_gcc/toolchains.gni
+++ b/pw_toolchain/arm_gcc/toolchains.gni
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 # Specifies the tools used by ARM GCC toolchains.
 arm_gcc_toolchain_tools = {
   _tool_name_root = "arm-none-eabi-"
diff --git a/pw_toolchain/generate_toolchain.gni b/pw_toolchain/generate_toolchain.gni
index 41b100a..25e930f 100644
--- a/pw_toolchain/generate_toolchain.gni
+++ b/pw_toolchain/generate_toolchain.gni
@@ -14,8 +14,6 @@
 
 # gn-format disable
 import("//build_overrides/pigweed.gni")
-
-import("$dir_pigweed/legacy_target.gni")
 declare_args() {
   # Scope defining the current toolchain. Contains all of the arguments required
   # by the generate_toolchain template.
diff --git a/pw_toolchain/host_clang/BUILD.gn b/pw_toolchain/host_clang/BUILD.gn
index 7fc2200..8b1e642 100644
--- a/pw_toolchain/host_clang/BUILD.gn
+++ b/pw_toolchain/host_clang/BUILD.gn
@@ -15,9 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
-import("$dir_pigweed/modules.gni")
-
 # See https://github.com/google/sanitizers
 config("sanitize_address") {
   cflags = [ "-fsanitize=address" ]
diff --git a/pw_toolchain/host_clang/toolchains.gni b/pw_toolchain/host_clang/toolchains.gni
index 3894120..e79d80c 100644
--- a/pw_toolchain/host_clang/toolchains.gni
+++ b/pw_toolchain/host_clang/toolchains.gni
@@ -14,8 +14,6 @@
 
 # gn-format disable
 import("//build_overrides/pigweed.gni")
-
-import("$dir_pigweed/legacy_target.gni")
 declare_args() {
   # Sets the sanitizer to pass to clang. Valid values are those for "-fsanitize"
   # listed in https://clang.llvm.org/docs/UsersManual.html#id9.
diff --git a/pw_toolchain/host_gcc/BUILD.gn b/pw_toolchain/host_gcc/BUILD.gn
index 166cbed..230f3fd 100644
--- a/pw_toolchain/host_gcc/BUILD.gn
+++ b/pw_toolchain/host_gcc/BUILD.gn
@@ -15,8 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
-
 # Disable obnoxious ABI warning.
 #
 # GCC 7.1 adds an over-zealous ABI warning with little useful information
diff --git a/pw_toolchain/host_gcc/toolchains.gni b/pw_toolchain/host_gcc/toolchains.gni
index fe24fe8..27042f0 100644
--- a/pw_toolchain/host_gcc/toolchains.gni
+++ b/pw_toolchain/host_gcc/toolchains.gni
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 # Specifies the tools used by host GCC toolchains.
 _host_gcc_toolchain = {
   ar = "ar"
diff --git a/pw_trace/BUILD.gn b/pw_trace/BUILD.gn
index 3b3ca20..cd246f6 100644
--- a/pw_trace/BUILD.gn
+++ b/pw_trace/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/facade.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_unit_test/test.gni")
diff --git a/pw_varint/BUILD.gn b/pw_varint/BUILD.gn
index 4425e1f..8205bff 100644
--- a/pw_varint/BUILD.gn
+++ b/pw_varint/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_build/target_types.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_unit_test/test.gni")
diff --git a/pw_watch/BUILD.gn b/pw_watch/BUILD.gn
index 6c14ff7..3ba75f4 100644
--- a/pw_watch/BUILD.gn
+++ b/pw_watch/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_docgen/docs.gni")
 pw_doc_group("docs") {
   inputs = [ "doc_resources/pw_watch_on_device_demo.gif" ]
diff --git a/pw_web_ui/BUILD.gn b/pw_web_ui/BUILD.gn
index 956e5f7..601472c 100644
--- a/pw_web_ui/BUILD.gn
+++ b/pw_web_ui/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_docgen/docs.gni")
 pw_doc_group("docs") {
   sources = [ "docs.rst" ]
diff --git a/targets/host/BUILD.gn b/targets/host/BUILD.gn
index b680c16..a29795a 100644
--- a/targets/host/BUILD.gn
+++ b/targets/host/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_toolchain/generate_toolchain.gni")
 import("target_toolchains.gni")
diff --git a/targets/lm3s6965evb-qemu/BUILD.gn b/targets/lm3s6965evb-qemu/BUILD.gn
index 6162263..a326df0 100644
--- a/targets/lm3s6965evb-qemu/BUILD.gn
+++ b/targets/lm3s6965evb-qemu/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_toolchain/generate_toolchain.gni")
 import("target_toolchains.gni")
diff --git a/targets/stm32f429i-disc1/BUILD.gn b/targets/stm32f429i-disc1/BUILD.gn
index c9313fc..ec4b4b3 100644
--- a/targets/stm32f429i-disc1/BUILD.gn
+++ b/targets/stm32f429i-disc1/BUILD.gn
@@ -15,7 +15,6 @@
 # gn-format disable
 import("//build_overrides/pigweed.gni")
 
-import("$dir_pigweed/legacy_target.gni")
 import("$dir_pw_docgen/docs.gni")
 import("$dir_pw_toolchain/generate_toolchain.gni")
 import("target_toolchains.gni")