Revert "Fix unittests for cupy.random.generator"
Revert "Fix unittests for cupy.random.generator"

This reverts commit a305a3df79fedfbae77e633ad1aec7a5fe113636.

kashif/chainer,AlpacaDB/chainer,wkentaro/chainer,keisuke-umezawa/chainer,ktnyt/chainer,wkentaro/chainer,niboshi/chainer,cupy/cupy,cupy/cupy,chainer/chainer,niboshi/chainer,ysekky/chainer,aonotas/chainer,jnishi/chainer,ktnyt/chainer,niboshi/chainer,cemoody/chainer,okuta/chainer,jnishi/chainer,kikusu/chainer,rezoo/chainer,cupy/cupy,AlpacaDB/chainer,hvy/chainer,ktnyt/chainer,chainer/chainer,keisuke-umezawa/chainer,hvy/chainer,benob/chainer,truongdq/chainer,okuta/chainer,hvy/chainer,truongdq/chainer,niboshi/chainer,muupan/chainer,kiyukuta/chainer,sinhrks/chainer,sinhrks/chainer,keisuke-umezawa/chainer,delta2323/chainer,chainer/chainer,jnishi/chainer,wkentaro/chainer,ktnyt/chainer,hvy/chainer,jnishi/chainer,chainer/chainer,pfnet/chainer,tkerola/chainer,wkentaro/chainer,muupan/chainer,cupy/cupy,keisuke-umezawa/chainer,okuta/chainer,okuta/chainer,anaruse/chainer,t-abe/chainer,benob/chainer,ronekko/chainer,t-abe/chainer,kikusu/chainer