bazel: yank publish-to-bcr workflow

I am not yet ready to trust the 3rd-party tooling involved. Making
those updates semi-manually is nearly good enough for now.
diff --git a/.bcr/README.md b/.bcr/README.md
deleted file mode 100644
index d8cdc6b..0000000
--- a/.bcr/README.md
+++ /dev/null
@@ -1,80 +0,0 @@
-# Bazel Central Registry (BCR) Publishing
-
-This directory contains template files for automated publishing to the [Bazel Central Registry](https://github.com/bazelbuild/bazel-central-registry).
-
-## Overview
-
-The workflow automatically publishes new versions of gperftools to the BCR when a new tag is created following the pattern `gperftools-X.Y.Z`.
-
-## Setup
-
-### 1. Create a BCR Fork
-
-The maintainer needs to fork the [Bazel Central Registry](https://github.com/bazelbuild/bazel-central-registry) repository to their personal or organization account.
-
-### 2. Create a Personal Access Token (PAT)
-
-1. Go to GitHub Settings → Developer settings → Personal access tokens → Tokens (classic)
-2. Click "Generate new token (classic)"
-3. Give it a descriptive name (e.g., "BCR Publish Token")
-4. Select the following scopes:
-   - `repo` (full control of private repositories)
-   - `workflow` (update GitHub Action workflows)
-5. Generate the token and copy it immediately (it won't be shown again)
-
-### 3. Add the Token as a Repository Secret
-
-1. Go to the gperftools repository settings
-2. Navigate to Secrets and variables → Actions
-3. Click "New repository secret"
-4. Name: `BCR_PUBLISH_TOKEN`
-5. Value: Paste the PAT you created
-6. Click "Add secret"
-
-## Usage
-
-### Automatic Publishing
-
-When you create a new release tag (e.g., `gperftools-2.17.3`), the workflow will automatically:
-
-1. Trigger on the tag push
-2. Generate the BCR entry using the template files in this directory
-3. Push the entry to your BCR fork
-4. Open a draft pull request to the official BCR
-
-### Manual Publishing
-
-If you need to republish or troubleshoot, you can manually trigger the workflow:
-
-1. Go to Actions → Publish to BCR
-2. Click "Run workflow"
-3. Enter the tag name (e.g., `gperftools-2.17.3`)
-4. Click "Run workflow"
-
-## Template Files
-
-- **metadata.template.json**: Contains repository information and maintainers
-- **source.template.json**: Defines the source archive URL pattern and structure
-- **presubmit.yml**: Specifies the build and test targets for BCR validation
-
-These files are used to generate the actual BCR entry when a new version is published.
-
-## Troubleshooting
-
-### Pull Request Not Created
-
-- Verify that `BCR_PUBLISH_TOKEN` is set correctly in repository secrets
-- Check that the PAT has `repo` and `workflow` permissions
-- Ensure the BCR fork exists and is accessible
-
-### Build Failures in BCR
-
-- Review the presubmit.yml targets to ensure they are correct
-- Check that the MODULE.bazel file is up to date
-- Verify the source archive URL pattern in source.template.json
-
-## More Information
-
-- [Publish to BCR Documentation](https://github.com/bazel-contrib/publish-to-bcr)
-- [BCR Contribution Guidelines](https://github.com/bazelbuild/bazel-central-registry/blob/main/docs/README.md)
-- [Bzlmod User Guide](https://bazel.build/docs/bzlmod)
diff --git a/.bcr/metadata.template.json b/.bcr/metadata.template.json
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index 29e299c..0000000
--- a/.bcr/metadata.template.json
+++ /dev/null
@@ -1,15 +0,0 @@
-{
-  "homepage": "https://github.com/gperftools/gperftools",
-  "maintainers": [
-    {
-      "github": "alk",
-      "github_user_id": 14850,
-      "name": "Aliaksiej Kandracienka (aka Aliaksei Kandratsenka)"
-    }
-  ],
-  "repository": [
-    "github:gperftools/gperftools"
-  ],
-  "versions": [],
-  "yanked_versions": {}
-}
diff --git a/.bcr/presubmit.yml b/.bcr/presubmit.yml
deleted file mode 100644
index 3fdfc69..0000000
--- a/.bcr/presubmit.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-matrix:
-  platform:
-  - debian10
-  - ubuntu2004
-  - macos
-  - macos_arm64
-  bazel:
-  - 7.x
-  - 8.x
-  - 9.x
-tasks:
-  verify_targets:
-    name: Verify build targets
-    platform: ${{ platform }}
-    bazel: ${{ bazel }}
-    build_targets:
-    - '@gperftools//:cpu_profiler'
-    - '@gperftools//:tcmalloc'
diff --git a/.bcr/source.template.json b/.bcr/source.template.json
deleted file mode 100644
index dacbe81..0000000
--- a/.bcr/source.template.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-  "integrity": "",
-  "strip_prefix": "gperftools-{VERSION}",
-  "url": "https://github.com/{OWNER}/{REPO}/releases/download/{TAG}/{REPO}-{VERSION}.tar.gz"
-}
diff --git a/.github/workflows/publish-to-bcr.yml b/.github/workflows/publish-to-bcr.yml
deleted file mode 100644
index 5a181c0..0000000
--- a/.github/workflows/publish-to-bcr.yml
+++ /dev/null
@@ -1,34 +0,0 @@
-name: Publish to BCR
-
-on:
-  # Trigger on tag creation
-  push:
-    tags:
-      - 'gperftools-*'
-  # Allow manual dispatch for troubleshooting
-  workflow_dispatch:
-    inputs:
-      tag_name:
-        description: 'Tag name to publish (e.g., gperftools-2.17.3)'
-        required: true
-        type: string
-
-jobs:
-  publish:
-    uses: bazel-contrib/publish-to-bcr/.github/workflows/publish.yaml@v6
-    with:
-      tag_name: ${{ github.event_name == 'workflow_dispatch' && inputs.tag_name || github.ref_name }}
-      # The official Bazel Central Registry
-      registry: bazelbuild/bazel-central-registry
-      # Tag prefix to strip for version calculation
-      tag_prefix: "gperftools-"
-      # Enable attestations for release artifacts
-      attest: false
-      # Open PR as draft (recommended for BCR auto-approval workflow)
-      draft: true
-    permissions:
-      contents: write
-    secrets:
-      # This token must be created as a Classic PAT with 'repo' and 'workflow' permissions
-      # and stored as a repository secret named BCR_PUBLISH_TOKEN
-      publish_token: ${{ secrets.BCR_PUBLISH_TOKEN }}