refactor: Remove unnecessary gateways initialization in ServerManager to streamline code and improve clarity in handling server configurations.

frontend/src/ServerManager.jsx

@@ -630,8 +630,6 @@ function ServerManager() {
     setTimeout(() => setSuccess(''), 3000);
   };
 
-  const gateways = Array.isArray(localServer.gateways) ? localServer.gateways : [];
-
   return (
     <>
       {error && (