Disable test that fails intermittently in master

common/lib/xmodule/xmodule/js/spec/video/video_caption_spec.js

@@ -645,7 +645,7 @@
         });
       });
 
-      describe('when enter key is pressed on a caption', function() {
+      xdescribe('when enter key is pressed on a caption', function() {
         beforeEach(function() {
           var e;
           spyOn(videoCaption, 'seekPlayer').andCallThrough();
@@ -663,7 +663,7 @@
           expect($('.subtitles li[data-index=0]')).toHaveClass('focused');
         });
 
-        it('calls seekPlayer', function() {
+        xit('calls seekPlayer', function() {
            expect(videoCaption.seekPlayer).toHaveBeenCalled();
         });
       });