ci: remove stale js-qmd-index job whose test file was deleted (#25005)

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com>

Author: Copilot

.github/workflows/ci.yml

@@ -963,37 +963,6 @@ jobs:
       - name: Run tests
         run: cd actions/setup/js && npm test
 
-  js-qmd-index:
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    needs: validate-yaml
-    permissions:
-      contents: read
-    concurrency:
-      group: ci-${{ github.ref }}-js-qmd-index
-      cancel-in-progress: true
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-      - name: Set up Node.js
-        id: setup-node
-        uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6
-        with:
-          node-version: "24"
-          cache: npm
-          cache-dependency-path: actions/setup/js/package-lock.json
-      - name: Report Node cache status
-        run: |
-          if [ "${{ steps.setup-node.outputs.cache-hit }}" == "true" ]; then
-            echo "✅ Node cache hit" >> $GITHUB_STEP_SUMMARY
-          else
-            echo "⚠️ Node cache miss" >> $GITHUB_STEP_SUMMARY
-          fi
-      - name: Install npm dependencies
-        run: cd actions/setup/js && npm ci
-      - name: Run qmd_index.cjs tests
-        run: cd actions/setup/js && npm test -- qmd_index.test.cjs
-
   js-integration-live-api:
     if: github.ref == 'refs/heads/main'
     runs-on: ubuntu-latest