diff --git a/.github/workflows/php-changes-detection.yml b/.github/workflows/php-changes-detection.yml
deleted file mode 100644
index d003d149a9a09..0000000000000
--- a/.github/workflows/php-changes-detection.yml
+++ /dev/null
@@ -1,101 +0,0 @@
-name: OPTIONAL - Confirm if PHP changes require backporting to WordPress Core
-
-on:
-    pull_request:
-        types: [opened, synchronize]
-jobs:
-    detect_php_changes:
-        name: Detect PHP changes
-        runs-on: ubuntu-latest
-        if: ${{ github.repository == 'WordPress/gutenberg' || github.event_name == 'pull_request' }}
-        steps:
-            - name: Check out code
-              uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4.1.6
-              with:
-                  fetch-depth: 0
-                  show-progress: ${{ runner.debug == '1' && 'true' || 'false' }}
-
-            - name: Get changed PHP files
-              id: changed-files-php
-              uses: tj-actions/changed-files@d6babd6899969df1a11d14c368283ea4436bca78 # v44.5.2
-              with:
-                  files: |
-                      lib/**
-                      packages/**/*.php
-                      phpunit/**
-
-            - name: List all changed files
-              if: steps.changed-files-php.outputs.any_changed == 'true'
-              id: list-changed-php-files
-              run: |
-                  echo "Changed files:"
-                  formatted_change_list=""
-                  for file in ${{ steps.changed-files-php.outputs.all_changed_files }}; do
-                    echo "$file was changed"
-                    formatted_change_list+="<br>:grey_question: $file"
-                  done
-                  formatted_change_list+="<br>"
-                  echo "formatted_change_list=$formatted_change_list" >> $GITHUB_OUTPUT
-
-            - name: Find Comment
-              uses: peter-evans/find-comment@v3
-              id: find-comment
-              with:
-                  issue-number: ${{ github.event.pull_request.number }}
-                  comment-author: 'github-actions[bot]'
-                  body-includes: '<!-- pr-contains-php-changes -->'
-
-            - name: Create comment
-              if: steps.find-comment.outputs.comment-id == '' && steps.changed-files-php.outputs.any_changed == 'true'
-              uses: peter-evans/create-or-update-comment@v4
-              with:
-                  issue-number: ${{ github.event.pull_request.number }}
-                  body: |
-                      <!-- pr-contains-php-changes -->
-                      This pull request has changed or added PHP files. Please confirm whether these changes need to be synced to WordPress Core, and therefore featured in the next release of WordPress.
-
-                      If so, it is recommended to create a [new Trac ticket](https://core.trac.wordpress.org/newticket) and submit a pull request to the [WordPress Core GitHub repository](https://github.com/WordPress/wordpress-develop) soon after this pull request is merged.
-
-                      If you're unsure, you can always ask for help in the #core-editor channel in  [WordPress Slack](https://make.wordpress.org/chat/).
-
-                      Thank you! :heart:
-
-                      <details>
-                        <summary>View changed files</summary>
-                        ${{ steps.list-changed-php-files.outputs.formatted_change_list }}
-                      </details>
-
-            - name: Update comment
-              if: steps.find-comment.outputs.comment-id != '' && steps.changed-files-php.outputs.any_changed == 'true'
-              uses: peter-evans/create-or-update-comment@v4
-              with:
-                  comment-id: ${{ steps.find-comment.outputs.comment-id }}
-                  issue-number: ${{ github.event.pull_request.number }}
-                  edit-mode: replace
-                  body: |
-                      <!-- pr-contains-php-changes -->
-                      This pull request has changed or added PHP files. Please confirm whether these changes need to be synced to WordPress Core, and therefore featured in the next release of WordPress.
-
-                      If so, it is recommended to create a [new Trac ticket](https://core.trac.wordpress.org/newticket) and submit a pull request to the [WordPress Core GitHub repository](https://github.com/WordPress/wordpress-develop) soon after this pull request is merged.
-
-                      If you're unsure, you can always ask for help in the #core-editor channel in  [WordPress Slack](https://make.wordpress.org/chat/).
-
-                      Thank you! :heart:
-
-                      <details>
-                        <summary>View changed files</summary>
-                        ${{ steps.list-changed-php-files.outputs.formatted_change_list }}
-                      </details>
-
-            - name: Update comment
-              if: steps.find-comment.outputs.comment-id != '' && steps.changed-files-php.outputs.any_changed != 'true'
-              uses: peter-evans/create-or-update-comment@v4
-              with:
-                  comment-id: ${{ steps.find-comment.outputs.comment-id }}
-                  issue-number: ${{ github.event.pull_request.number }}
-                  edit-mode: replace
-                  body: |
-                      <!-- pr-contains-php-changes -->
-                      This pull request changed or added PHP files in previous commits, but none have been detected in the latest commit.
-
-                      Thank you! :heart: