Removed old helpers.
Removed old helpers.

libiao88/PKRevealController,SummerHF/PKRevealController,emodeqidao/PKRevealController,wjszf/PKRevealController,wubangjunjava/PKRevealController,AbooJan/PKRevealController,cnbin/PKRevealController,RyanTech/PKRevealController,pengleelove/PKRevealController,adonoho/PKRevealController,wayne798/PKRevealController,wpostma/PKRevealControllerWP,xiaotaijun/PKRevealController,policp/PKRevealController,andyFang1688/PKRevealController,duanhjlt/PKRevealController,pkluz/PKRevealController,adonoho/PKRevealController,ramoslin02/PKRevealController,SanChain/PKRevealController,leasual/PKRevealController,nitxc/PKRevealController,AlanJN/PKRevealController,chieryw/PKRevealController,BlessNeo/PKRevealController,adonoho/PKRevealController,xingyuniu/PKRevealController,chengkaizone/PKRevealController,SuPair/PKRevealController,hanangellove/PKRevealController