Can i Obsoletes core packages from extras package?

[Parag N(पराग़)]

Hi,
  I am planning to add Gutenprint package to Fedora-extras. Gutenprint
was formerly called Gimp-Print. So once this package is in
Fedora-extras it needs first to remove following packages
gimp-print
gimp-print-cups
gimp-print-devel
gimp-print-plugin
gimp-print-utils
 But is it allowed to do that?
I have opened a review request for this package. You can check it at
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=199108

Thanks & Regards,
Parag Nemade.