Remove redandunt import
Remove redandunt import

kashif/chainer,ikasumi/chainer,cemoody/chainer,Kaisuke5/chainer,cupy/cupy,keisuke-umezawa/chainer,kikusu/chainer,anaruse/chainer,okuta/chainer,ronekko/chainer,hidenori-t/chainer,truongdq/chainer,sinhrks/chainer,niboshi/chainer,jfsantos/chainer,ktnyt/chainer,niboshi/chainer,pfnet/chainer,wkentaro/chainer,kikusu/chainer,sinhrks/chainer,chainer/chainer,hvy/chainer,okuta/chainer,delta2323/chainer,umitanuki/chainer,jnishi/chainer,laysakura/chainer,tkerola/chainer,aonotas/chainer,minhpqn/chainer,ktnyt/chainer,chainer/chainer,jnishi/chainer,masia02/chainer,kuwa32/chainer,niboshi/chainer,cupy/cupy,1986ks/chainer,t-abe/chainer,kiyukuta/chainer,keisuke-umezawa/chainer,sou81821/chainer,cupy/cupy,okuta/chainer,wkentaro/chainer,wkentaro/chainer,AlpacaDB/chainer,tigerneil/chainer,tscohen/chainer,chainer/chainer,cupy/cupy,jnishi/chainer,benob/chainer,ysekky/chainer,elviswf/chainer,truongdq/chainer,wkentaro/chainer,jnishi/chainer,keisuke-umezawa/chainer,bayerj/chainer,woodshop/chainer,yanweifu/chainer,t-abe/chainer,AlpacaDB/chainer,hvy/chainer,muupan/chainer,hvy/chainer,benob/chainer,hvy/chainer,rezoo/chainer,muupan/chainer,ktnyt/chainer,keisuke-umezawa/chainer,niboshi/chainer,woodshop/complex-chainer,chainer/chainer,okuta/chainer,ktnyt/chainer,ytoyama/yans_chainer_hackathon,wavelets/chainer,tereka114/chainer