Remove debug, so oldeps runs after linting

as is the case on `develop`

.github/workflows/tests.yml

@@ -130,7 +130,7 @@ jobs:
   trial-olddeps:
     # Note: sqlite only; no postgres
     if: ${{ !cancelled() && !failure() }} # Allow previous steps to be skipped, but not fail
-#    needs: linting-done
+    needs: linting-done
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2