Remove update-sha workflow (#1594)

.github/workflows/update-sha.yml

@@ -1,50 +0,0 @@
-name: Update SHA
-
-on: issue_comment
-
-jobs:
-  update-pr-sha:
-    name: Update SHA
-    if: ${{ github.event.issue.pull_request && contains(github.event.comment.body, 'update-sha') }}
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-        with:
-          token: ${{ secrets.BOT_TOKEN }}
-
-      # would have been lit if github supported string split expression
-      - name: Extract branch name from comment to get commit SHA
-        uses: jungwinter/split@v2
-        id: split
-        with:
-          msg: ${{ github.event.comment.body }}
-
-      - name: Set up Python
-        uses: actions/setup-python@v4
-        with:
-          python-version: '3.9'
-
-      - name: Use CLA approved github bot
-        run: .github/scripts/use-cla-approved-github-bot.sh
-
-      - name: Checkout Pull Request
-        env:
-          GITHUB_TOKEN: ${{ secrets.BOT_TOKEN }}
-        run: |
-          PR_URL="${{ github.event.issue.pull_request.url }}"
-          PR_NUM=${PR_URL##*/}
-          echo "Checking out from PR #$PR_NUM based on URL: $PR_URL"
-          hub pr checkout $PR_NUM
-
-      # caching is not supported for this event type
-      - name: Run script
-        run: |
-          python -m pip install requests==2.28.1 ruamel.yaml==0.17.21
-          python scripts/update_sha.py --branch ${{ steps.split.outputs._1 }}
-
-      - name: Commit and Push changes
-        env:
-          GITHUB_TOKEN: ${{ secrets.BOT_TOKEN }}
-        run: |
-          git commit -a -m "Update SHA"
-          git push