Remove used type: ignore comment

Author: vitalk

src/pytest_flask/fixtures.py

@@ -45,7 +45,7 @@ def test_login(self):
         request.cls.client = client
 
 
-@pytest.fixture(scope=_determine_scope)  # type: ignore[arg-type]
+@pytest.fixture(scope=_determine_scope)
 def live_server(
     request: _PytestFixtureRequest, app: _FlaskApp, pytestconfig: _PytestConfig
 ) -> Generator[LiveServer, Any, Any]:  # pragma: no cover