Simplify the output of Function.label
Simplify the output of Function.label

sinhrks/chainer,chainer/chainer,chainer/chainer,AlpacaDB/chainer,hvy/chainer,cupy/cupy,cupy/cupy,Kaisuke5/chainer,AlpacaDB/chainer,jnishi/chainer,kashif/chainer,yanweifu/chainer,anaruse/chainer,ikasumi/chainer,okuta/chainer,tscohen/chainer,1986ks/chainer,cupy/cupy,aonotas/chainer,benob/chainer,keisuke-umezawa/chainer,woodshop/complex-chainer,niboshi/chainer,masia02/chainer,sinhrks/chainer,ronekko/chainer,wkentaro/chainer,minhpqn/chainer,truongdq/chainer,tkerola/chainer,umitanuki/chainer,laysakura/chainer,jfsantos/chainer,woodshop/chainer,ysekky/chainer,wkentaro/chainer,cemoody/chainer,t-abe/chainer,t-abe/chainer,hvy/chainer,chainer/chainer,muupan/chainer,delta2323/chainer,sou81821/chainer,keisuke-umezawa/chainer,ytoyama/yans_chainer_hackathon,tigerneil/chainer,elviswf/chainer,ktnyt/chainer,keisuke-umezawa/chainer,kiyukuta/chainer,pfnet/chainer,keisuke-umezawa/chainer,ktnyt/chainer,truongdq/chainer,niboshi/chainer,kikusu/chainer,ktnyt/chainer,niboshi/chainer,cupy/cupy,rezoo/chainer,okuta/chainer,okuta/chainer,hvy/chainer,tereka114/chainer,benob/chainer,bayerj/chainer,chainer/chainer,wavelets/chainer,ktnyt/chainer,hidenori-t/chainer,jnishi/chainer,kikusu/chainer,muupan/chainer,kuwa32/chainer,jnishi/chainer,wkentaro/chainer,jnishi/chainer,hvy/chainer,wkentaro/chainer,niboshi/chainer,okuta/chainer