Also remove python 3.6
Also remove python 3.6

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