roll: pigweed pw_env_setup: Move pip lock file exports

This removes the empty BUILD.bazel file in
pw_env_setup/py/pw_env_setup/virtualenv_setup/ so Python sources in
that location can be added to the pw_env_setup py_library.

Original-Bug: 374172519
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/242716
Original-Revision: f316527088d854faa23e6bedb0ae89c6cde18f77

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 03c2d2b925c610..f316527088d854
Roll-Count: 1
Roller-URL: https://ci.chromium.org/b/8733786938401315121
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I434e62f4902549e6fde65264a82ee193cc19874d
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/showcase/sense/+/243058
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
diff --git a/MODULE.bazel b/MODULE.bazel
index 6f25db7..91518b1 100644
--- a/MODULE.bazel
+++ b/MODULE.bazel
@@ -49,8 +49,8 @@
     module_name = "pigweed",
     # ROLL: Warning: this entry is automatically updated.
     # ROLL: Last updated 2024-10-17.
-    # ROLL: By https://cr-buildbucket.appspot.com/build/8733791966157819201.
-    commit = "03c2d2b925c610b9c1fdb818c732af80a8f88225",
+    # ROLL: By https://cr-buildbucket.appspot.com/build/8733786938401315121.
+    commit = "f316527088d854faa23e6bedb0ae89c6cde18f77",
     remote = "https://pigweed.googlesource.com/pigweed/pigweed",
 )
 
@@ -58,8 +58,8 @@
     module_name = "pw_toolchain",
     # ROLL: Warning: this entry is automatically updated.
     # ROLL: Last updated 2024-10-17.
-    # ROLL: By https://cr-buildbucket.appspot.com/build/8733791966157819201.
-    commit = "03c2d2b925c610b9c1fdb818c732af80a8f88225",
+    # ROLL: By https://cr-buildbucket.appspot.com/build/8733786938401315121.
+    commit = "f316527088d854faa23e6bedb0ae89c6cde18f77",
     remote = "https://pigweed.googlesource.com/pigweed/pigweed",
     strip_prefix = "pw_toolchain_bazel",
 )