rm unused private field in profiler
rm unused private field in profiler

QiJune/Paddle,pkuyym/Paddle,luotao1/Paddle,jacquesqiao/Paddle,reyoung/Paddle,putcn/Paddle,luotao1/Paddle,Canpio/Paddle,jacquesqiao/Paddle,Canpio/Paddle,luotao1/Paddle,jacquesqiao/Paddle,PaddlePaddle/Paddle,baidu/Paddle,jacquesqiao/Paddle,QiJune/Paddle,chengduoZH/Paddle,PaddlePaddle/Paddle,QiJune/Paddle,putcn/Paddle,tensor-tang/Paddle,QiJune/Paddle,baidu/Paddle,Canpio/Paddle,putcn/Paddle,PaddlePaddle/Paddle,reyoung/Paddle,pkuyym/Paddle,reyoung/Paddle,PaddlePaddle/Paddle,reyoung/Paddle,PaddlePaddle/Paddle,chengduoZH/Paddle,pkuyym/Paddle,putcn/Paddle,lcy-seso/Paddle,lcy-seso/Paddle,pkuyym/Paddle,Canpio/Paddle,PaddlePaddle/Paddle,Canpio/Paddle,putcn/Paddle,lcy-seso/Paddle,pkuyym/Paddle,luotao1/Paddle,lcy-seso/Paddle,tensor-tang/Paddle,QiJune/Paddle,QiJune/Paddle,lcy-seso/Paddle,Canpio/Paddle,baidu/Paddle,tensor-tang/Paddle,Canpio/Paddle,reyoung/Paddle,reyoung/Paddle,jacquesqiao/Paddle,lcy-seso/Paddle,chengduoZH/Paddle,putcn/Paddle,luotao1/Paddle,chengduoZH/Paddle,luotao1/Paddle,baidu/Paddle,tensor-tang/Paddle,Canpio/Paddle,tensor-tang/Paddle,baidu/Paddle,pkuyym/Paddle,luotao1/Paddle,PaddlePaddle/Paddle,jacquesqiao/Paddle,chengduoZH/Paddle