Drop authz repo from EL9 build
While trying to figure out why mod_auth_openidc doesn't have Redis support, I found out that the authz repos don't ship mod_auth_openidc anymore. Therefore adding the repo is not necessary (and combined with the comment indeed confusing).
- https://koji.cern.ch/packageinfo?packageID=8050
- http://linuxsoft.cern.ch/internal/repos/authz9al-stable/x86_64/os/Packages/
- https://gitlab.cern.ch/authzsvc/rpms/mod_auth_openidc
New upstream: https://almalinux.pkgs.org/9/almalinux-appstream-x86_64/mod_auth_openidc-2.4.9.4-4.el9.x86_64.rpm.html