Remove redundant refresh-control widget

Author: SanderMertens

etc/js/app.js

@@ -139,7 +139,6 @@ function fmtDuration(seconds) {
 let components = [
   // Common components
   loadModule('js/components/widgets/title-bar/title-bar.vue', options),
-  loadModule('js/components/widgets/title-bar/refresh-control.vue', options),
   loadModule('js/components/widgets/title-bar/layout-control.vue', options),
   loadModule('js/components/widgets/title-bar/play-control.vue', options),
   loadModule('js/components/widgets/title-bar/url-bar.vue', options),