refactor(module): simplify service instantiation with generics

app/helper/mediaserver.py

@@ -1,23 +1,5 @@
-from typing import List
-
-from app.db.systemconfig_oper import SystemConfigOper
-from app.schemas import MediaServerConf
-from app.schemas.types import SystemConfigKey
-
-
 class MediaServerHelper:
     """
     媒体服务器帮助类
     """
-
-    def __init__(self):
-        self.systemconfig = SystemConfigOper()
-
-    def get_mediaservers(self) -> List[MediaServerConf]:
-        """
-        获取媒体服务器
-        """
-        mediaserver_confs: List[dict] = self.systemconfig.get(SystemConfigKey.MediaServers)
-        if not mediaserver_confs:
-            return []
-        return [MediaServerConf(**conf) for conf in mediaserver_confs]
+    pass