fix: Ruff x2

src/plugins/PFC/chat_observer.py

@@ -1,12 +1,12 @@
 import time
 import asyncio
 import traceback
-from typing import Optional, Dict, Any, List, Tuple
+from typing import Optional, Dict, Any, List 
 from src.common.logger import get_module_logger
 from ..message.message_base import UserInfo
 from ..config.config import global_config
 from .chat_states import NotificationManager, create_new_message_notification, create_cold_chat_notification
-from .message_storage import MessageStorage, MongoDBMessageStorage
+from .message_storage import  MongoDBMessageStorage
 
 logger = get_module_logger("chat_observer")
 

src/plugins/PFC/message_storage.py

@@ -1,7 +1,6 @@
 from abc import ABC, abstractmethod
-from typing import List, Dict, Any, Optional
+from typing import List, Dict, Any
 from src.common.database import db
-import time
 
 class MessageStorage(ABC):
     """消息存储接口"""