Update admin.py

Author: kenliao94

src/mcp_server_rabbitmq/admin.py

@@ -75,9 +75,3 @@ def get_overview(self) -> Dict:
         """Get overview of RabbitMQ server including version, stats, and listeners"""
         response = self._make_request("GET", "overview")
         return response.json()
-    
-if __name__ == "__main__":
-    # test
-    admin = RabbitMQAdmin("b-9560b8e1-3d33-4d91-9488-a3dc4a61dfe7.mq.us-east-1.amazonaws.com", 15671, "admin", "admintestrabbit", True)
-    print(admin.list_queues())
-    print("Done")