setup.py: Filter out LICENSE info
setup.py: Filter out LICENSE info

The LICENSE link is a repo-relative one that will 404 if
rendered on PyPi. Filter it out since PyPi already has
license info in its sidebar.

Yes, this is a very brittle solution, but maintainers should
not have to upload too often.

posativ/isso,posativ/isso,posativ/isso,posativ/isso