Revert "makes scrollbar work with custom scrollbar plugin, fixes #308"

This reverts commit 8cc74e5.

Author: fnagel

ui/jquery.ui.selectmenu.js

@@ -261,12 +261,7 @@ $.widget("ui.selectmenu", {
 				return true;
 			})
 			// this allows for using the scrollbar in an overflowed list
-			.bind( 'mousedown.selectmenu mouseup.selectmenu', function(e) {
-				// supports custom scroll bar and other plugins which wrap the selectmenu content
-				if (e.target.hasAttribute('href') && e.target.hash==='#nogo') {
-					return false;
-				}
-			});
+			.bind( 'mousedown.selectmenu mouseup.selectmenu', function() { return false; });
 
 		// needed when window is resized
 		$( window ).bind( "resize.selectmenu-" + this.ids[ 0 ], $.proxy( self.close, this ) );