Disable deprecated legacy push notifications

Just disable the Notifier menu item, but keep the code.

Firebase push notifications do not work anymore:
https://firebase.google.com/docs/cloud-messaging/http-server-ref
"Sending messages ... with ... HTTP legacy APIs was deprecated on June
20, 2023, and will be [has been] removed starting June 2024"

src/View/system/include.php

@@ -70,7 +70,7 @@
 			'logs' => _MENU('Logs'),
 			'wui' => _MENU('WUI'),
 			'users' => _MENU('Users'),
-			'notifier' => _MENU('Notifier'),
+			// 'notifier' => _MENU('Notifier'),
 			),
 		),
 	'procs' => array(