Remove temporary display: flex from #music-app for debugging

Author: lynkos

assets/stylesheets/sass/components/music-app.sass

@@ -36,7 +36,6 @@ $thumb-border-color: $track-color
   flex-direction: column
   align-content: stretch
   @include mix.window(rgba(42, 45, 41, 0.6), $window-width, 50rem, 55rem, 20rem)
-  display: flex // temp
 
   .body
     color: white