Disable horizontal scroll in 2.5.4

Is there a way to disable the horizontal scroll in 2.5.4, like the following did in version 1?

.active-scroll-space {width: 0px!important;}

Thanks
Justin

.aw-bars-spacer {width: 0px!important;}

You can remove the horizontal scrollbar with this code -

obj.setScrollBars("vertical");
obj.onScrollBarsChanging = function(){return 1}; //cancel change

Thanks. That works beautifully.

I'm loving 2.5.4.

Justin