Build: remove init/SystemV directory
FreeIPA has hard dependency on systemd for a long time already.
SystemV directory was just polluting the tarball (while being useless).
https://fedorahosted.org/freeipa/ticket/6418
Reviewed-By: Martin Basti <mbasti@redhat.com>
Reviewed-By: Christian Heimes <cheimes@redhat.com>