Remove redundant assignment
Remove redundant assignment

hvy/chainer,cupy/cupy,tkerola/chainer,kashif/chainer,cupy/cupy,okuta/chainer,niboshi/chainer,jnishi/chainer,rezoo/chainer,okuta/chainer,jnishi/chainer,cupy/cupy,wkentaro/chainer,hvy/chainer,keisuke-umezawa/chainer,chainer/chainer,ysekky/chainer,hvy/chainer,hvy/chainer,okuta/chainer,chainer/chainer,okuta/chainer,chainer/chainer,anaruse/chainer,cupy/cupy,keisuke-umezawa/chainer,ktnyt/chainer,keisuke-umezawa/chainer,pfnet/chainer,aonotas/chainer,jnishi/chainer,niboshi/chainer,wkentaro/chainer,wkentaro/chainer,ktnyt/chainer,kiyukuta/chainer,chainer/chainer,niboshi/chainer,ronekko/chainer,wkentaro/chainer,keisuke-umezawa/chainer,ktnyt/chainer,delta2323/chainer,jnishi/chainer,niboshi/chainer,ktnyt/chainer