Bug 1332807 - Remove overlay opacity when moving mouse over video. r=jaws

MozReview-Commit-ID: LBnEGfoVOHC

--HG--
extra : rebase_source : 57431242508c8fe297ca2997e38d748f45791d20

toolkit/themes/shared/media/videocontrols.css

@@ -485,11 +485,6 @@ audio > xul|videocontrols {
   background-color: transparent;
 }
 
-.controlsSpacer:hover {
-  background-color: rgb(254,255,255);
-  opacity: .4;
-}
-
 @media (-moz-windows-default-theme) {
   .controlsSpacer {
     background-color: rgba(255,255,255,.4);