Merge pull request #11476 from ZDroid/keyframes

Remove unusual keyframes prefixes

dist/css/bootstrap.css

@@ -5396,24 +5396,6 @@ a.thumbnail.active {
   }
 }
 
-@-moz-keyframes progress-bar-stripes {
-  from {
-    background-position: 40px 0;
-  }
-  to {
-    background-position: 0 0;
-  }
-}
-
-@-o-keyframes progress-bar-stripes {
-  from {
-    background-position: 0 0;
-  }
-  to {
-    background-position: 40px 0;
-  }
-}
-
 @keyframes progress-bar-stripes {
   from {
     background-position: 40px 0;

less/progress-bars.less

@@ -12,18 +12,6 @@
   to    { background-position: 0 0; }
 }
 
-// Firefox
-@-moz-keyframes progress-bar-stripes {
-  from  { background-position: 40px 0; }
-  to    { background-position: 0 0; }
-}
-
-// Opera
-@-o-keyframes progress-bar-stripes {
-  from  { background-position: 0 0; }
-  to    { background-position: 40px 0; }
-}
-
 // Spec and IE10+
 @keyframes progress-bar-stripes {
   from  { background-position: 40px 0; }