去除无效代码

db/contacts_db.py

@@ -312,32 +312,6 @@ class ContactsDBOperator(BaseDBOperator):
             self.LOG.error(f"获取所有联系人信息失败: {e}")
             return {}
 
-    def get_all_contacts_name_map(self) -> Dict[str, str]:
-        """获取所有联系人的ID到显示名称的映射
-        
-        Returns:
-            Dict[str, str]: 联系人ID到显示名称的映射
-        """
-        try:
-            sql = """
-            SELECT user_name, remark, nick_name FROM t_wechat_contacts
-            """
-
-            results = self.execute_query(sql)
-
-            name_map = {}
-            for result in results:
-                user_name = result.get('user_name')
-                remark = result.get('remark')
-                nick_name = result.get('nick_name')
-                display_name = remark or nick_name or user_name
-                name_map[user_name] = display_name
-
-            return name_map
-        except Exception as e:
-            self.LOG.error(f"获取所有联系人名称映射失败: {e}")
-            return {}
-
     def save_chatroom_member_simple(self, chatroom_id: str, member_details: List[Dict]) -> bool:
         """
         保存群成员简要信息到数据库，兼容不同数据结构