Bug 171488 [classic] Remove old import rule in bookmarksWindow.css

patch by walk84@yahoo.com r=shuehan sr=bz

themes/classic/communicator/bookmarks/bookmarksWindow.css

@@ -38,7 +38,6 @@
  * ***** END LICENSE BLOCK ***** */
 
 @import url("chrome://communicator/skin/bookmarks/bookmarks.css");
-@import url("chrome://communicator/skin/bookmarks/platformBookmarks.css");
 
 @namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");