[gnome-shell/T29763: 221/249] appDisplay: Remove unused variable

[Matthew Leeds <mwleeds src gnome org>]

commit 692ac3efb215624853d8d13fe5a5db832425ab92
Author: Andre Moreira Magalhaes <andre endlessm com>
Date:   Thu Apr 16 00:41:06 2020 -0300

    appDisplay: Remove unused variable
    
    https://phabricator.endlessm.com/T29781

 js/ui/appDisplay.js | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/js/ui/appDisplay.js b/js/ui/appDisplay.js
index 691fc91ad7..81b671bc68 100644
--- a/js/ui/appDisplay.js
+++ b/js/ui/appDisplay.js
@@ -2034,8 +2034,6 @@ var AppIcon = GObject.registerClass({
             button_mask: St.ButtonMask.ONE | St.ButtonMask.TWO,
         }, iconParams);
 
-        let buttonParams = { button_mask: St.ButtonMask.ONE | St.ButtonMask.TWO };
-
         this._iconContainer = new St.Widget({ layout_manager: new Clutter.BinLayout(),
                                               x_expand: true, y_expand: true });
         this._iconContainer.add_child(this.icon);