Revert "Adapt for nautilus-python -> python2-nautilus rename"
    
    The nautilus-python rename was reverted in F29. In addition, remove
    'Requires: python2-gobject' as nautilus-python now correctly depends on
    either python2-gobject or python3-gobject, depending on what Python
    version it's built with.
    
    https://bugzilla.redhat.com/show_bug.cgi?id=1636626
    
    This reverts commit 7602cd9182fb86113079eceba6613acf13558961.
    This reverts commit b147bed24806453117ec98c02eaa5fe4da86a6cc.