[gnome-shell] background: Remove a couple of unused variables

[Rui Matos <rtcm src gnome org>]

commit 9f6f48025d3005748f1f50d86e737f8670ad563e
Author: Rui Matos <tiagomatos gmail com>
Date:   Mon Jan 30 13:28:16 2017 +0100

    background: Remove a couple of unused variables
    
    Nothing uses these.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=777934

 js/ui/background.js |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)
---
diff --git a/js/ui/background.js b/js/ui/background.js
index 622a59a..9b36029 100644
--- a/js/ui/background.js
+++ b/js/ui/background.js
@@ -142,7 +142,6 @@ const BackgroundCache = new Lang.Class({
     Name: 'BackgroundCache',
 
     _init: function() {
-        this._pendingFileLoads = [];
         this._fileMonitors = {};
         this._backgroundSources = {};
         this._animations = {};
@@ -377,11 +376,9 @@ const Background = new Lang.Class({
 
         let cache = Meta.BackgroundImageCache.get_default();
         let numPendingImages = files.length;
-        let images = [];
         for (let i = 0; i < files.length; i++) {
             this._watchFile(files[i]);
             let image = cache.load(files[i]);
-            images.push(image);
             if (image.is_loaded()) {
                 numPendingImages--;
                 if (numPendingImages == 0)