chore: remove broken docs

In theory we could generate them with Bazel 8, however this repo is deprecated and there is almost nothing to generate docs for.
Unblocks releasing the repo, since the release step attempts to run all tests and the docs tests are broken since
https://github.com/bazelbuild/rules_proto/commit/c42a088bbbf3097095f38c60c47c51f828d60e6a
diff --git a/.bazelci/presubmit.yml b/.bazelci/presubmit.yml
index e2d0407..e17762f 100644
--- a/.bazelci/presubmit.yml
+++ b/.bazelci/presubmit.yml
@@ -1,10 +1,8 @@
 ---
 build_targets: &build_targets
   - "//..."
-  - "-//docs/..."
 test_targets: &test_targets
   - "//..."
-  - "-//docs/..."
 
 buildifier:
   version: latest
@@ -127,15 +125,3 @@
     test_flags:
       - "--config=bzlmod"
     test_targets: *test_targets
-#  docs:
-#    name: "Docs"
-#    bazel: last_green
-#    platform: ubuntu2004
-#    build_flags:
-#      - "--config=bzlmod"
-#    build_targets:
-#      - "//docs/..."
-#    test_flags:
-#      - "--config=bzlmod"
-#    test_targets:
-#      - "//docs/..."
diff --git a/.gitattributes b/.gitattributes
index 3194ddf..dd07241 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,6 +1,3 @@
-# In code review, collapse generated files
-docs/*.md linguist-generated=true
-
 # Configuration for 'git archive'
 # see https://git-scm.com/docs/git-archive/2.40.0#ATTRIBUTES
 # Omit folders that users don't need, making the distribution artifact smaller
diff --git a/MODULE.bazel b/MODULE.bazel
index 619f99e..2a69659 100644
--- a/MODULE.bazel
+++ b/MODULE.bazel
@@ -13,7 +13,5 @@
 bazel_dep(name = "rules_license", version = "0.0.7")
 
 # Dependencies needed in tests
-bazel_dep(name = "stardoc", version = "0.7.1", dev_dependency = True, repo_name = "io_bazel_stardoc")
-bazel_dep(name = "rules_shell", version = "0.2.0", dev_dependency = True)  # only used in docs
 bazel_dep(name = "platforms", version = "0.0.8", dev_dependency = True)
 bazel_dep(name = "googletest", version = "1.11.0", dev_dependency = True, repo_name = "com_google_googletest")
diff --git a/docs/BUILD b/docs/BUILD
deleted file mode 100644
index 9349d4a..0000000
--- a/docs/BUILD
+++ /dev/null
@@ -1,12 +0,0 @@
-load(":stardoc_with_diff_test.bzl", "stardoc_with_diff_test", "update_docs")
-
-stardoc_with_diff_test(
-    name = "defs",
-    bzl_library_target = "//proto:defs",
-    out_label = "//docs:defs.md",
-)
-
-update_docs(
-    name = "update",
-    docs_folder = "docs",
-)
diff --git a/docs/defs.md b/docs/defs.md
deleted file mode 100644
index 6c39139..0000000
--- a/docs/defs.md
+++ /dev/null
@@ -1,74 +0,0 @@
-<!-- Generated with Stardoc: http://skydoc.bazel.build -->
-
-Starlark rules for building protocol buffers.
-
-<a id="proto_descriptor_set"></a>
-
-## proto_descriptor_set
-
-<pre>
-proto_descriptor_set(<a href="#proto_descriptor_set-name">name</a>, <a href="#proto_descriptor_set-deps">deps</a>)
-</pre>
-
-Collects all `FileDescriptorSet`s from `deps` and combines them into a single
-`FileDescriptorSet` containing all the `FileDescriptorProto`.
-
-**ATTRIBUTES**
-
-
-| Name  | Description | Type | Mandatory | Default |
-| :------------- | :------------- | :------------- | :------------- | :------------- |
-| <a id="proto_descriptor_set-name"></a>name |  A unique name for this target.   | <a href="https://bazel.build/concepts/labels#target-names">Name</a> | required |  |
-| <a id="proto_descriptor_set-deps"></a>deps |  Sequence of <code>ProtoInfo</code>s to collect <code>FileDescriptorSet</code>s from.   | <a href="https://bazel.build/concepts/labels">List of labels</a> | optional | <code>[]</code> |
-
-
-<a id="proto_lang_toolchain"></a>
-
-## proto_lang_toolchain
-
-<pre>
-proto_lang_toolchain(<a href="#proto_lang_toolchain-name">name</a>, <a href="#proto_lang_toolchain-toolchain_type">toolchain_type</a>, <a href="#proto_lang_toolchain-exec_compatible_with">exec_compatible_with</a>, <a href="#proto_lang_toolchain-target_compatible_with">target_compatible_with</a>, <a href="#proto_lang_toolchain-attrs">attrs</a>)
-</pre>
-
-Creates a proto_lang_toolchain and corresponding toolchain target.
-
-Toolchain target is only created when toolchain_type is set.
-
-https://docs.bazel.build/versions/master/be/protocol-buffer.html#proto_lang_toolchain
-
-
-**PARAMETERS**
-
-
-| Name  | Description | Default Value |
-| :------------- | :------------- | :------------- |
-| <a id="proto_lang_toolchain-name"></a>name |  name of the toolchain   |  none |
-| <a id="proto_lang_toolchain-toolchain_type"></a>toolchain_type |  The toolchain type   |  <code>None</code> |
-| <a id="proto_lang_toolchain-exec_compatible_with"></a>exec_compatible_with |  ([constraints]) List of constraints the prebuild binaries is compatible with.   |  <code>[]</code> |
-| <a id="proto_lang_toolchain-target_compatible_with"></a>target_compatible_with |  ([constraints]) List of constraints the target libraries are compatible with.   |  <code>[]</code> |
-| <a id="proto_lang_toolchain-attrs"></a>attrs |  Rule attributes   |  none |
-
-
-<a id="proto_toolchain"></a>
-
-## proto_toolchain
-
-<pre>
-proto_toolchain(<a href="#proto_toolchain-name">name</a>, <a href="#proto_toolchain-proto_compiler">proto_compiler</a>, <a href="#proto_toolchain-exec_compatible_with">exec_compatible_with</a>)
-</pre>
-
-Creates a proto_toolchain and toolchain target for proto_library.
-
-Toolchain target is suffixed with "_toolchain".
-
-
-**PARAMETERS**
-
-
-| Name  | Description | Default Value |
-| :------------- | :------------- | :------------- |
-| <a id="proto_toolchain-name"></a>name |  name of the toolchain   |  none |
-| <a id="proto_toolchain-proto_compiler"></a>proto_compiler |  (Label) of either proto compiler sources or prebuild binaries   |  none |
-| <a id="proto_toolchain-exec_compatible_with"></a>exec_compatible_with |  ([constraints]) List of constraints the prebuild binary is compatible with.   |  <code>[]</code> |
-
-
diff --git a/docs/stardoc_with_diff_test.bzl b/docs/stardoc_with_diff_test.bzl
deleted file mode 100644
index 3575621..0000000
--- a/docs/stardoc_with_diff_test.bzl
+++ /dev/null
@@ -1,111 +0,0 @@
-# Copyright 2022 The Bazel Authors. All rights reserved.
-#
-# 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
-#
-#    http://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.
-"""Helpers for keeping stardoc documentation up-to-date.
-
-These are currently a private API in bazel-skylib.
-See discussion:
-https://github.com/bazelbuild/bazel-skylib/pull/321#issuecomment-1081166216
-
-If you need a similar feature, you can consider using a similar rule
-available from a third-party:
-https://github.com/aspect-build/bazel-lib/blob/main/docs/docs.md
-"""
-
-load("@bazel_skylib//rules:diff_test.bzl", "diff_test")
-load("@bazel_skylib//rules:write_file.bzl", "write_file")
-load("@io_bazel_stardoc//stardoc:stardoc.bzl", "stardoc")
-load("@rules_shell//shell:sh_binary.bzl", "sh_binary")
-
-def stardoc_with_diff_test(
-        name,
-        bzl_library_target,
-        out_label):
-    """Creates a stardoc target coupled with a `diff_test` for a given `bzl_library`.
-
-    This is helpful for minimizing boilerplate in repos with lots of stardoc targets.
-
-    Args:
-        name: the stardoc target name
-        bzl_library_target: the label of the `bzl_library` target to generate documentation for
-        out_label: the label of the output MD file
-    """
-    out_file = out_label.replace("//", "").replace(":", "/")
-
-    # Generate MD from .bzl
-    stardoc(
-        name = name,
-        out = out_file.replace(".md", "-docgen.md"),
-        input = bzl_library_target + ".bzl",
-        deps = [bzl_library_target],
-    )
-
-    # Ensure that the generated MD has been updated in the local source tree
-    diff_test(
-        name = out_file.replace("/", "_").replace(".md", "-difftest"),
-        failure_message = "Please run \"bazel run //docs:update\"",
-        # Source file
-        file1 = out_label,
-        # Output from stardoc rule above
-        file2 = out_file.replace(".md", "-docgen.md"),
-        tags = ["no_windows"],
-    )
-
-def update_docs(
-        name = "update",
-        docs_folder = "docs"):
-    """Creates a `sh_binary` target which copies over generated doc files to the local source tree.
-
-    This is to be used in tandem with `stardoc_with_diff_test()` to produce a convenient workflow
-    for generating, testing, and updating all doc files as follows:
-
-    ``` bash
-    bazel build //{docs_folder}/... && bazel test //{docs_folder}/... && bazel run //{docs_folder}:update
-    ```
-
-    eg.
-
-    ``` bash
-    bazel build //docs/... && bazel test //docs/... && bazel run //docs:update
-    ```
-
-    The `update_docs()` invocation must come after/below any `stardoc_with_diff_test()` invocations
-    in the BUILD file.
-
-    Args:
-        name: the name of the `sh_binary` target
-        docs_folder: the name of the folder containing the doc files in the local source tree
-    """
-    content = ["#!/usr/bin/env bash", "cd ${BUILD_WORKSPACE_DIRECTORY}"]
-    data = []
-    for r in native.existing_rules().values():
-        if r["kind"] == "stardoc":
-            doc_gen = r["out"]
-            if doc_gen.startswith(":"):
-                doc_gen = doc_gen[1:]
-            doc_dest = doc_gen.replace("-docgen.md", ".md")
-            data.append(doc_gen)
-            content.append("cp -fv bazel-bin/{0}/{1} {2}".format(docs_folder, doc_gen, doc_dest))
-
-    update_script = name + ".sh"
-    write_file(
-        name = "gen_" + name,
-        out = update_script,
-        content = content,
-    )
-
-    sh_binary(
-        name = name,
-        srcs = [update_script],
-        data = data,
-    )
diff --git a/proto/BUILD b/proto/BUILD
index 7f8b70b..d819e92 100644
--- a/proto/BUILD
+++ b/proto/BUILD
@@ -1,10 +1,5 @@
 load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
 
-exports_files(
-    glob(["*.bzl"]),
-    visibility = ["//docs:__pkg__"],
-)
-
 bzl_library(
     name = "defs",
     srcs = [