chore: drop as _annotations (#1858)

src/mcp/client/websocket.py

@@ -1,5 +1,4 @@
 import json
-import logging
 from collections.abc import AsyncGenerator
 from contextlib import asynccontextmanager
 
@@ -12,8 +11,6 @@ from websockets.typing import Subprotocol
 import mcp.types as types
 from mcp.shared.message import SessionMessage
 
-logger = logging.getLogger(__name__)
-
 
 @asynccontextmanager
 async def websocket_client(