spec: Drop overlapping triggers

spec: Drop overlapping triggers

The postun trigger for libvirt-daemon was defined twice for overlapping
ranges of package verions if systemd support was switched off (which
happens when building on something ancient, such as RHEL-6).

Let's combine the two triggers into the one which is called when
libvirt-daemon < 1.3.0 is uninstalled. As a side effect, virtlockd and
virtlogd might be reloaded twice after an upgrade from libvirt newer
than 1.2.1 and older than 1.3.0 (by postun script from the old libvirt
and postun trigger from the new libvirt).

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>