Revert "emitting alert when restart is attempted in development mode"

This reverts commit 059c5452ea.

src/socket.io/admin.js

@@ -33,15 +33,6 @@ SocketAdmin.before = function(socket, next) {
 
 SocketAdmin.restart = function(socket, data, callback) {
 	meta.restart();
-
-	if (process.env.NODE_ENV === 'development') {
-		socket.emit('event:alert', {
-			title: 'Restart Not Available',
-			message: 'NodeBB restarting is disabled in development mode.',
-			type: 'warning',
-			timeout: 2500
-		});
-	}
 };
 
 /* Topics */