Fix coverage

tests/test_tutorial/test_settings/test_app01.py

@@ -22,7 +22,7 @@ def get_mod_name(request: pytest.FixtureRequest):
 @pytest.fixture(name="client")
 def get_test_client(mod_name: str, monkeypatch: MonkeyPatch) -> TestClient:
     if mod_name in sys.modules:
-        del sys.modules[mod_name]
+        del sys.modules[mod_name]  # pragma: no cover
     monkeypatch.setenv("ADMIN_EMAIL", "[email protected]")
     main_mod = importlib.import_module(mod_name)
     return TestClient(main_mod.app)