resolve all ruff check errors

gtasks/tasks_tools.py

@@ -6,9 +6,8 @@ This module provides MCP tools for interacting with Google Tasks API.
 
 import logging
 import asyncio
-from typing import List, Optional, Dict, Any
+from typing import Optional
 
-from mcp import types
 from googleapiclient.errors import HttpError
 
 from auth.service_decorator import require_google_service