Revert "JS-337: [Configurable.JS] Preload all needed images"

This reverts commit f213258.

app/code/Magento/ConfigurableProduct/view/frontend/web/js/configurable.js

@@ -7,12 +7,11 @@ define([
     'jquery',
     'underscore',
     'mage/template',
-    'mage/gallery/preloadImages',
     'priceUtils',
     'priceBox',
     'jquery/ui',
     'jquery/jquery.parsequery'
-], function ($, _, mageTemplate, preloadImages) {
+], function ($, _, mageTemplate) {
     'use strict';
 
     $.widget('mage.configurable', {
@@ -39,10 +38,6 @@ define([
             // Initial setting of various option values
             this._initializeOptions();
 
-            //Preload all gallery images
-            this._preloadImages();
-            this._preloadOptionalImages();
-
             // Override defaults with URL query parameters and/or inputs values
             this._overrideDefaults();
 
@@ -92,43 +87,6 @@ define([
             });
         },
 
-        /**
-         * Preloads default configuration images.
-         * @private
-         */
-        _preloadImages: function () {
-            var options = this.options,
-                fullImagesList = [], 
-                imagesList = [];
-
-            _.each(options.mediaGalleryInitial, function (item) {
-                imagesList.push(item.img);
-                fullImagesList.push(item.full);
-            });
-            preloadImages(imagesList);
-            preloadImages(fullImagesList);
-        },
-
-        /**
-         * Preloads optional configuration images.
-         * @private
-         */
-        _preloadOptionalImages: function () {
-            var options = this.options;
-
-            _.each(options.spConfig.images, function (array) {
-                var fullImagesList = [], 
-                    imagesList = [];
-
-                _.each(array, function (item) {
-                    imagesList.push(item.img);
-                    fullImagesList.push(item.full);
-                });
-                preloadImages(imagesList);
-                preloadImages(fullImagesList);
-            }
-        },
-
         /**
          * Override default options values settings with either URL query parameters or
          * initialized inputs values.