fix init paths

app/chain/search.py

@@ -16,11 +16,10 @@ from app.helper.torrent import TorrentHelper
 from app.log import logger
 from app.schemas import NotExistMediaInfo
 from app.schemas.types import MediaType, ProgressKey, SystemConfigKey
-from app.utils.singleton import Singleton
 from app.utils.string import StringUtils
 
 
-class SearchChain(ChainBase, metaclass=Singleton):
+class SearchChain(ChainBase):
     """
     站点资源搜索处理链
     """