fix(css): remove commented out css

Fixes #3587. Some commented out css was removed as it is no longer necessary and potentially causes issues.

src/css/ie8.css

@@ -1,30 +1,11 @@
-/**
-// IE 8 hack for media queries which the sass parser can encounter problems with
-$ie8screen: "\\0screen";
-
-// original home: css/components/_control-bar.scss
-// IE8 is flakey with fonts, and you have to change the actual content to force
-// fonts to show/hide properly.
-// - "\9" IE8 hack didn't work for this
-// Found in XP IE8 from http://modern.ie. Does not show up in "IE8 mode" in IE9
-.vjs-user-inactive.vjs-playing .vjs-control-bar :before {
-  @media #{$ie8screen} { content: ""; }
-}
-
-// Video has started playing AND user is inactive
-.vjs-has-started.vjs-user-inactive.vjs-playing .vjs-control-bar {
-
-  // Make controls hidden in IE8 for now
-  @media #{$ie8screen} {
-    visibility: hidden;
-  }
-}
-*/
-
 @media \0screen {
   .vjs-user-inactive.vjs-playing .vjs-control-bar :before {
-    content: ""; } }
+    content: "";
+  }
+}
 
 @media \0screen {
   .vjs-has-started.vjs-user-inactive.vjs-playing .vjs-control-bar {
-    visibility: hidden; } }
+    visibility: hidden;
+  }
+}