[gnome-shell] folderIcon: Remove duplicated addMenu call

[Florian Müllner <fmuellner src gnome org>]

commit 42188b7698da83a2e43622d375c6c6f1cedf4c5c
Author: Marco Trevisan (Treviño) <mail 3v1n0 net>
Date:   Fri Sep 13 05:17:03 2019 +0200

    folderIcon: Remove duplicated addMenu call
    
    The RenameFolderMenu is added already to its menu manager, so no need to
    repeat the operation.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/720

 js/ui/appDisplay.js | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/js/ui/appDisplay.js b/js/ui/appDisplay.js
index 8571d86b90..21469d1f99 100644
--- a/js/ui/appDisplay.js
+++ b/js/ui/appDisplay.js
@@ -1696,8 +1696,6 @@ var FolderIcon = class FolderIcon {
             this.actor.connect('destroy', () => {
                 Main.overview.disconnect(id);
             });
-
-            this._menuManager.addMenu(this._menu);
         }
 
         this.actor.set_hover(true);