Removed github tarball URL. PyPI can host the tarball instead.
Removed github tarball URL. PyPI can host the tarball instead.

t1m0thy/autograd,kcarnold/autograd,hips/autograd,melgor/autograd,HIPS/autograd,barak/autograd,HIPS/autograd,hips/autograd,jackkamm/autograd,FighterLYL/autograd