This feature is not used as far as we know and it's not known to work.
It's preferable to remove it.
Test plan:
Make sure the OpacGroupResults pref code is removed, as well as the
PazPar2 files and code.
Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
