Revert "fix:小bug修复"

This reverts commit 7b4686638c.

src/plugins/storage/storage.py

@@ -1,10 +1,9 @@
-from typing import Union, Optional
+from typing import Union
 
 from ...common.database import db
 from ..chat.message import MessageSending, MessageRecv
 from ..chat.chat_stream import ChatStream
 from src.common.logger import get_module_logger
-from ..message.message_base import BaseMessageInfo, Seg, UserInfo
 
 logger = get_module_logger("message_storage")
 
@@ -27,57 +26,6 @@ class MessageStorage:
         except Exception:
             logger.exception("存储消息失败")
 
-    async def get_last_message(self, chat_id: str, user_id: str) -> Optional[MessageRecv]:
-        """获取指定聊天流和用户的最后一条消息
-        
-        Args:
-            chat_id: 聊天流ID
-            user_id: 用户ID
-            
-        Returns:
-            Optional[MessageRecv]: 最后一条消息，如果没有找到则返回None
-        """
-        try:
-            # 查找最后一条消息
-            message_data = db.messages.find_one(
-                {
-                    "chat_id": chat_id,
-                    "user_info.user_id": user_id
-                },
-                sort=[("time", -1)]  # 按时间降序排序
-            )
-            
-            if not message_data:
-                return None
-                
-            # 构建消息字典
-            message_dict = {
-                "message_info": {
-                    "platform": message_data["chat_info"]["platform"],
-                    "message_id": message_data["message_id"],
-                    "time": message_data["time"],
-                    "group_info": message_data["chat_info"].get("group_info"),
-                    "user_info": message_data["user_info"]
-                },
-                "message_segment": {
-                    "type": "text",
-                    "data": message_data["processed_plain_text"]
-                },
-                "raw_message": message_data["processed_plain_text"]
-            }
-            
-            # 创建并返回消息对象
-            message = MessageRecv(message_dict)
-            message.processed_plain_text = message_data["processed_plain_text"]
-            message.detailed_plain_text = message_data["detailed_plain_text"]
-            message.update_chat_stream(ChatStream.from_dict(message_data["chat_info"]))
-            
-            return message
-            
-        except Exception:
-            logger.exception("获取最后一条消息失败")
-            return None
-
     async def store_recalled_message(self, message_id: str, time: str, chat_stream: ChatStream) -> None:
         """存储撤回消息到数据库"""
         if "recalled_messages" not in db.list_collection_names():