The Python dependencies are already tracked by the python2 or python3
"Requires".  This filters out the python binaries from the RPM
automatic requires/provides scanner.

Before this change, a query for the requirements of the Python 2 package
would reveal:

    $ rpm -qRp fedora-26-noarch/python2-avocado-60.0-1.fc26.noarch.rpm
    /usr/bin/python2
    /usr/bin/python3
    ...

Reference: https://fedoraproject.org/wiki/Packaging:AutoProvidesAndRequiresFiltering#Filtering_provides_and_requires_after_scanningSigned-off-by: NCleber Rosa <crosa@redhat.com>