Remove auto-commit functionality from CI

Since developers should run pre-commit hooks locally (which now includes ruff format),
there's no need for CI to auto-commit formatting changes. The CI should simply
validate that code is properly formatted, not fix it automatically.

This follows the principle that pre-commit hooks should be run locally by developers
before pushing, making the workflow cleaner and more predictable.

Co-authored-by: openhands <openhands@all-hands.dev>

Author: openhands-agent

.github/workflows/precommit.yml

@@ -7,20 +7,13 @@ on:
   pull_request:
     branches: ["**"]
 
-permissions:
-  contents: write
-  pull-requests: write
-
 jobs:
   pre-commit:
     runs-on: ubuntu-latest
 
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-          fetch-depth: 0
 
       - name: Set up Python
         uses: actions/setup-python@v5
@@ -37,10 +30,3 @@ jobs:
         uses: pre-commit/action@v3.0.1
         with:
           extra_args: --all-files
-
-      - name: Auto-commit formatting changes
-        if: failure()
-        uses: stefanzweifel/git-auto-commit-action@v5
-        with:
-          commit_message: "Auto-format code with ruff\n\nCo-authored-by: openhands <openhands@all-hands.dev>"
-          file_pattern: "*.py"