remove some of unnecessary cast.
remove some of unnecessary cast.

wxzh/fcore,hkuplg/fcore,xnning/fcore,wxzh/fcore,zhiyuanshi/fcore,hkuplg/fcore,zhiyuanshi/fcore,wxzh/fcore,bixuanzju/fcore,xnning/fcore,zhiyuanshi/fcore,bixuanzju/fcore,hkuplg/fcore,xnning/fcore,bixuanzju/fcore