Small optimizations and remove unused code
Small optimizations and remove unused code

nguyenuit/jcarousel,stormwild/jcarousel,cssfirefly/jcarousel,mrkiwi/jcarousel,mrkiwi/jcarousel,cssfirefly/jcarousel,npmcomponent/jsor-jcarousel,jsor/jcarousel,Hanzig/jcarousel,burakkp/jcarousel,jsor/jcarousel,nguyenuit/jcarousel,Hanzig/jcarousel,Orehouse/jcarousel,Orehouse/jcarousel,stormwild/jcarousel