Revert unnecessary change to dropout
Revert unnecessary change to dropout

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