[Refactor and Enhance] addon init.py의 비동기 작업을 더욱 효율적으로 수행

addon/access_token.py

@@ -1,6 +1,5 @@
 import re
-from dataclasses import dataclass, asdict
-from typing import List, Dict, Optional, Any
+from typing import Optional, Any
 import asyncio
 
 from mitmproxy.http import HTTPFlow