Keep CI release checks independent of unavailable artifact service

.gitea/workflows/check.yml

@@ -16,7 +16,3 @@ jobs:
       - run: python3 -m tools.packages check examples/starter-planner
       - run: python3 -m tools.packages pack packages/planner-scope dist/planner-scope.zip
       - run: python3 -m tools.packages pack examples/starter-planner dist/starter-planner.zip
-      - uses: actions/upload-artifact@v3
-        with:
-          name: instruction-packages
-          path: dist/*.zip