chore: 清理未使用变量

services/stock_data_provider.py

@@ -1,11 +1,8 @@
 import pandas as pd
-import numpy as np
 from datetime import datetime, timedelta
 import asyncio
-import os
 from typing import Dict, List, Optional, Tuple, Any
-from logger import get_logger
-import re
+from utils.logger import get_logger
 
 # 获取日志器
 logger = get_logger()