Remove matplotlib.use from PlotReport
Remove matplotlib.use from PlotReport

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