fix style

Author: xinyululala

src/azure-cli/azure/cli/command_modules/containerapp/_sdk_models.py

@@ -9,7 +9,7 @@
 
 from collections.abc import MutableMapping
 import datetime
-from typing import Any, Dict, List, Literal, Optional, Union
+from typing import Any, Literal, Optional, Union
 
 import msrest.serialization as _serialization