Cleanup memory_pool_test.cc
Cleanup memory_pool_test.cc

hvy/chainer,jnishi/chainer,tkerola/chainer,keisuke-umezawa/chainer,wkentaro/chainer,keisuke-umezawa/chainer,jnishi/chainer,jnishi/chainer,okuta/chainer,ktnyt/chainer,niboshi/chainer,ktnyt/chainer,keisuke-umezawa/chainer,jnishi/chainer,keisuke-umezawa/chainer,wkentaro/chainer,wkentaro/chainer,chainer/chainer,chainer/chainer,chainer/chainer,ktnyt/chainer,niboshi/chainer,hvy/chainer,ktnyt/chainer,pfnet/chainer,hvy/chainer,okuta/chainer,okuta/chainer,okuta/chainer,hvy/chainer,chainer/chainer,wkentaro/chainer,niboshi/chainer,niboshi/chainer