Remove shutdown() from TorrentManager because stop() is already called

during a component shutdown.

deluge/core/torrentmanager.py

@@ -120,9 +120,6 @@ class TorrentManager(component.Component):
         for key in self.torrents.keys():
             self.torrents[key].write_fastresume()
                         
-    def shutdown(self):
-        self.stop()
-                        
     def __getitem__(self, torrent_id):
         """Return the Torrent with torrent_id"""
         return self.torrents[torrent_id]