removed unnecessary lines on environment configuration in image classification demo
removed unnecessary lines on environment configuration in image classification demo

Change-Id: If3d82f278560fc0f43e8bebeeef0501a4cf0ea7d

gangliao/Paddle,pengli09/Paddle,beckett1124/Paddle,cxysteven/Paddle,jacquesqiao/Paddle,PaddlePaddle/Paddle,reyoung/Paddle,pengli09/Paddle,beckett1124/Paddle,livc/Paddle,livc/Paddle,lispc/Paddle,dayhaha/Paddle,alvations/Paddle,wen-bo-yang/Paddle,cxysteven/Paddle,tensor-tang/Paddle,beckett1124/Paddle,pkuyym/Paddle,wen-bo-yang/Paddle,luotao1/Paddle,helinwang/Paddle,livc/Paddle,zhouxiao-coder/Paddle,dayhaha/Paddle,zhouxiao-coder/Paddle,QiJune/Paddle,baidu/Paddle,lcy-seso/Paddle,lcy-seso/Paddle,zhouxiao-coder/Paddle,Canpio/Paddle,tensor-tang/Paddle,beckett1124/Paddle,chengduoZH/Paddle,dayhaha/Paddle,beckett1124/Paddle,reyoung/Paddle,yu239/Paddle,hedaoyuan/Paddle,Canpio/Paddle,reyoung/Paddle,hedaoyuan/Paddle,zuowang/Paddle,cxysteven/Paddle,baidu/Paddle,helinwang/Paddle,PaddlePaddle/Paddle,lcy-seso/Paddle,luotao1/Paddle,comeonfox/Paddle,wen-bo-yang/Paddle,beckett1124/Paddle,chengduoZH/Paddle,helinwang/Paddle,cxysteven/Paddle,lispc/Paddle,lispc/Paddle,emailweixu/Paddle,jacquesqiao/Paddle,beckett1124/Paddle,lispc/Paddle,pengli09/Paddle,emailweixu/Paddle,hedaoyuan/Paddle,zuowang/Paddle,reyoung/Paddle,qingqing01/Paddle,PaddlePaddle/Paddle,pkuyym/Paddle,lispc/Paddle,wen-bo-yang/Paddle,gangliao/Paddle,livc/Paddle,baidu/Paddle,alvations/Paddle,zhouxiao-coder/Paddle,comeonfox/Paddle,comeonfox/Paddle,dayhaha/Paddle,lispc/Paddle,lcy-seso/Paddle,hedaoyuan/Paddle,Canpio/Paddle,Canpio/Paddle,yu239/Paddle,pkuyym/Paddle,baidu/Paddle,helinwang/Paddle,luotao1/Paddle,gangliao/Paddle,livc/Paddle,zuowang/Paddle,PaddlePaddle/Paddle,wen-bo-yang/Paddle,alvations/Paddle,hedaoyuan/Paddle,cxysteven/Paddle,pengli09/Paddle,gangliao/Paddle,wen-bo-yang/Paddle,Canpio/Paddle,chengduoZH/Paddle,reyoung/Paddle,Canpio/Paddle,gangliao/Paddle,QiJune/Paddle,cxysteven/Paddle,cxysteven/Paddle,QiJune/Paddle,jacquesqiao/Paddle,qingqing01/Paddle,jacquesqiao/Paddle,pkuyym/Paddle,Canpio/Paddle,pkuyym/Paddle,hedaoyuan/Paddle,alvations/Paddle,alvations/Paddle,putcn/Paddle,luotao1/Paddle,dayhaha/Paddle,helinwang/Paddle,lcy-seso/Paddle,emailweixu/Paddle,helinwang/Paddle,yu239/Paddle,helinwang/Paddle,pengli09/Paddle,putcn/Paddle,QiJune/Paddle,yu239/Paddle,PaddlePaddle/Paddle,QiJune/Paddle,luotao1/Paddle,lispc/Paddle,tensor-tang/Paddle,luotao1/Paddle,yu239/Paddle,hedaoyuan/Paddle,zhouxiao-coder/Paddle,pengli09/Paddle,emailweixu/Paddle,lcy-seso/Paddle,PaddlePaddle/Paddle,emailweixu/Paddle,pengli09/Paddle,hedaoyuan/Paddle,luotao1/Paddle,pkuyym/Paddle,emailweixu/Paddle,comeonfox/Paddle,QiJune/Paddle,Canpio/Paddle,emailweixu/Paddle,qingqing01/Paddle,pengli09/Paddle,PaddlePaddle/Paddle,yu239/Paddle,baidu/Paddle,lispc/Paddle,putcn/Paddle,wen-bo-yang/Paddle,qingqing01/Paddle,dayhaha/Paddle,zhouxiao-coder/Paddle,zhouxiao-coder/Paddle,gangliao/Paddle,yu239/Paddle,livc/Paddle,jacquesqiao/Paddle,reyoung/Paddle,zuowang/Paddle,dayhaha/Paddle,putcn/Paddle,chengduoZH/Paddle,gangliao/Paddle,comeonfox/Paddle,tensor-tang/Paddle,putcn/Paddle,putcn/Paddle,qingqing01/Paddle,jacquesqiao/Paddle,yu239/Paddle,zuowang/Paddle,tensor-tang/Paddle,chengduoZH/Paddle,livc/Paddle