Fix gallery thumbs navigation scrolling

Author: iGerchak

lib/web/fotorama/fotorama.js

@@ -1220,22 +1220,6 @@ fotoramaVersion = '4.6.4';
         stopPropagation && e.stopPropagation && e.stopPropagation();
     }
 
-    function stubEvent($el, eventType) {
-        var isIOS = /ip(ad|hone|od)/i.test(window.navigator.userAgent);
-
-        if (isIOS && eventType === 'touchend') {
-            $el.on('touchend', function(e){
-                $DOCUMENT.trigger('mouseup', e);
-            })
-        }
-
-        $el.on(eventType, function (e) {
-            stopEvent(e, true);
-
-            return false;
-        });
-    }
-
     function getDirectionSign(forward) {
         return forward ? '>' : '<';
     }
@@ -1538,10 +1522,10 @@ fotoramaVersion = '4.6.4';
 
             $WINDOW.on('scroll', onOtherEnd);
 
-            $el.on('mousedown pointerdown', onStart);
+            $el.on('mousedown', onStart);
             $DOCUMENT
-                .on('mousemove pointermove', onMove)
-                .on('mouseup pointerup', onEnd);
+                .on('mousemove', onMove)
+                .on('mouseup', onEnd);
         }
         if (Modernizr.touch) {
             dragDomEl = 'a';
@@ -2183,11 +2167,6 @@ fotoramaVersion = '4.6.4';
             if (o_allowFullScreen) {
                 $fullscreenIcon.prependTo($stage);
                 o_nativeFullScreen = FULLSCREEN && o_allowFullScreen === 'native';
-
-                // Due 300ms click delay on mobile devices
-                // we stub touchend and fallback to click.
-                // MAGETWO-69567
-                stubEvent($fullscreenIcon, 'touchend');
             } else {
                 $fullscreenIcon.detach();
                 o_nativeFullScreen = false;