fix ruff errors

Author: radofuchs

tests/e2e/features/steps/auth.py

@@ -3,7 +3,7 @@
 import requests
 from behave import given, when  # pyright: ignore[reportAttributeAccessIssue]
 from behave.runner import Context
-from tests.e2e.utils.utils import normalize_endpoint, switch_config_and_restart
+from tests.e2e.utils.utils import normalize_endpoint
 
 
 @given("I set the Authorization header to {header_value}")