Bug 1178004 - Remove dead code from browser-aero.css. r=dao

browser/themes/windows/browser-aero.css

@@ -335,14 +335,3 @@
     -moz-appearance: -moz-win-browsertabbar-toolbox;
   }
 }
-
-/* Win8 and beyond. */
-@media not all and (-moz-os-version: windows-vista) {
-  @media not all and (-moz-os-version: windows-win7) {
-    /* Introducing an additional hover state for the Bookmark button */
-    #nav-bar .toolbarbutton-1[buttonover] > .toolbarbutton-menubutton-button:hover > .toolbarbutton-icon {
-      background-color: hsla(210,4%,10%,.08);
-      border-color: hsla(210,4%,10%,.1);
-    }
-  }
-}