fix: fix ruff linting errors

litellm/a2a_protocol/providers/base.py

@@ -3,7 +3,7 @@ Base configuration for A2A protocol providers.
 """
 
 from abc import ABC, abstractmethod
-from typing import Any, AsyncIterator, Dict, Optional
+from typing import Any, AsyncIterator, Dict
 
 
 class BaseA2AProviderConfig(ABC):

litellm/a2a_protocol/providers/pydantic_ai_agents/transformation.py

@@ -6,7 +6,7 @@ This module provides fake streaming by converting non-streaming responses into s
 """
 
 import asyncio
-from typing import Any, AsyncIterator, Dict, Optional
+from typing import Any, AsyncIterator, Dict
 from uuid import uuid4
 
 import httpx