This allows us to include a version and we already use PURL
for other things, so might as well remove the pypi special case.
Normalize the names, since that is required for PURLs.
* python-appdirs: Drop Python 2 package
* python-packaging: Drop Python 2 package
and drop the check depends and function, all those
packages don't exist..
* python-pyparsing: Drop Python 2 package
* python2-pytest: Remove package
* python-atomicwrites: Drop Python 2 package
* python-pytest-runner: Drop Python 2 package
* python-attrs: Drop Python 2 package
* python-pluggy: Drop Python 2 package
* python-py: Drop Python 2 package
* python2-more-itertools: Drop package
* python-setuptools-scm: Drop Python 2 package
