reverting back to previous successful build

.github/workflows/explorer_preview.yml

@@ -10,18 +10,6 @@ jobs:
     if: ${{ github.event.workflow_run.conclusion == 'success' }}
     steps:
       - uses: actions/checkout@v2
-#          with:
-#           ref: ${{ github.event.pull_request.head.sha }}
-       - uses: actions/setup-node@v2
-         with:
-           node-version: '14'
-           cache: 'npm'
-           cache-dependency-path: explorer/package-lock.json
-       - run: npm i -g npm@7
-       - run: npm ci
-       - run: npm run format
-       - run: npm run build
-       - run: npm run test
       - uses: amondnet/vercel-action@v20
         with:
           vercel-token: ${{ secrets.VERCEL_TOKEN }} # Required