removed the unneeded env reads
removed the unneeded env reads

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