Remove assign ops, compute_loss
Remove assign ops, compute_loss

lilleswing/deepchem,deepchem/deepchem,peastman/deepchem,miaecle/deepchem,miaecle/deepchem,lilleswing/deepchem,lilleswing/deepchem,miaecle/deepchem,deepchem/deepchem,peastman/deepchem