Archived old "bugzilla.gnome.org" git module

[Olav Vitters <olav vitters nl>]

The git module on git.gnome.org couldn't be archived because Mango
relied on it to determine as a source of people to vouch for Bugzilla
admin rights. As Mango is dead and gone, no need to keep the module
around.

Maybe we could rename bugzilla-gnome-org-customizations to
bugzilla.gnome.org. This would enable git commit number to link
automatically.

-- 
Regards,
Olav