[General] Delete the unused code for delete key
[General] Delete the unused code for delete key

cubemoon/rib,KevinChanH/rib,KevinChanH/rib,suoko/rib,xuzhang/rib,Galen-Titanium/rib,Galen-Titanium/rib,ndkeren/rib,crazyart/rib,maxyu/rib,01org/rib,Safiya85/rib,xuqingkuang/rib,pplaquette/rib,KevinChanH/rib,01org/rib,modulexcite/rib,taubmann/rib,vevedh/rib,xuqingkuang/rib,taubmann/rib,01org/rib,amithnair/rib,2braincells2go/rib,byjg/rib,crazyart/rib,suoko/rib,modulexcite/rib,VIP000/rib,maxyu/rib,wuyongfeng/rib,Galen-Titanium/rib,carlst/rib,2braincells2go/rib,amithnair/rib,xuzhang/rib,pplaquette/rib,eaglebk/rib,Safiya85/rib,zhizhangchen/rib,eaglebk/rib,smallertomato/rib,VIP000/rib,b-cuts/rib,jsphkhan/rib,jmptrader/rib,jmptrader/rib,carlst/rib,jsphkhan/rib,suoko/rib,cubemoon/rib,DonnaWuDongxia/rib,byjg/rib,wuyongfeng/rib,smallertomato/rib,jmptrader/rib,DonnaWuDongxia/rib,vevedh/rib,amithnair/rib,2braincells2go/rib,b-cuts/rib,crazyart/rib,b-cuts/rib,modulexcite/rib,ndkeren/rib