Don't use tox for check-sampleconfig

.github/workflows/tests.yml

@@ -10,12 +10,18 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  check-sampleconfig:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+      - run: scripts-dev/generate_sample_config --check
+
   lint:
     runs-on: ubuntu-latest
     strategy:
       matrix:
         toxenv:
-          - "check-sampleconfig"
           - "check_codestyle"
           - "check_isort"
           - "mypy"
@@ -51,7 +57,7 @@ jobs:
   # Dummy step to gate other tests on without repeating the whole list
   linting-done:
     if: ${{ !cancelled() }} # Run this even if prior jobs were skipped
-    needs: [lint, lint-crlf, lint-newsfile]
+    needs: [lint, lint-crlf, lint-newsfile, check-sampleconfig]
     runs-on: ubuntu-latest
     steps:
       - run: "true"

tox.ini

@@ -175,9 +175,6 @@ deps = towncrier>=18.6.0rc1
 commands =
    python -m towncrier.check --compare-with=origin/develop
 
-[testenv:check-sampleconfig]
-commands = {toxinidir}/scripts-dev/generate_sample_config --check
-
 [testenv:combine]
 skip_install = true
 usedevelop = false