build: clean-up sync label workflow

Author: devpow112

.github/workflows/sync-labels.yml

@@ -19,7 +19,5 @@ jobs:
         uses: actions/[email protected]
       - name: Sync labels
         uses: micnncim/[email protected]
-        env:
-          GITHUB_TOKEN: ${{github.token}}
         with:
-          manifest: .github/labels.yml
+          token: ${{github.token}}