fix db session

app/chain/search.py

@@ -5,8 +5,6 @@ from datetime import datetime
 from typing import Dict
 from typing import List, Optional
 
-from sqlalchemy.orm import Session
-
 from app.chain import ChainBase
 from app.core.context import Context
 from app.core.context import MediaInfo, TorrentInfo
@@ -26,8 +24,8 @@ class SearchChain(ChainBase):
     站点资源搜索处理链
     """
 
-    def __init__(self, db: Session = None):
-        super().__init__(db)
+    def __init__(self):
+        super().__init__()
         self.siteshelper = SitesHelper()
         self.progress = ProgressHelper()
         self.systemconfig = SystemConfigOper()