apps-menu: Don't override sort order

Keep the order in which GMenu returns loaded apps, so users can
reorder entries in Alacarte.

Fixes https://gitlab.gnome.org/GNOME/gnome-shell-extensions/issues/27

extensions/apps-menu/extension.js

@@ -745,9 +745,6 @@ const ApplicationsButton = new Lang.Class({
 
         if (category_menu_id) {
             applist = this.applicationsByCategory[category_menu_id];
-            applist.sort(function(a,b) {
-                return a.get_name().toLowerCase() > b.get_name().toLowerCase();
-            });
         } else {
             applist = new Array();
             let favorites = global.settings.get_strv('favorite-apps');