fix: remove __del__

Co-authored-by: Allen Porter <allen.porter@gmail.com>

Author: Lash-L

roborock/broadcast_protocol.py

@@ -29,9 +29,6 @@ def __init__(self, timeout: int = 5):
         self.devices_found: list[BroadcastMessage] = []
         self._mutex = Lock()
 
-    def __del__(self):
-        self.close()
-
     def datagram_received(self, data, _):
         [broadcast_message], _ = BroadcastParser.parse(data)
         if broadcast_message.payload: