db: remove unused field from images_storage_domain_view
db: remove unused field from images_storage_domain_view

The field contains_unregistered_entities in images_storage_domain_view
is never used, so it (and its related JOIN) can be removed from the
view.

Change-Id: Icaeab8a653c8da74534f987cc68fbe3c214f943a
Related-To: https://bugzilla.redhat.com/1247144
Signed-off-by: Idan Shaby <7d282434a997b05b417940edadd292e8428dbe3c@redhat.com>

walteryang47/ovirt-engine,yapengsong/ovirt-engine,yingyun001/ovirt-engine,eayun/ovirt-engine,zerodengxinchao/ovirt-engine,walteryang47/ovirt-engine,walteryang47/ovirt-engine,walteryang47/ovirt-engine,yapengsong/ovirt-engine,yingyun001/ovirt-engine,eayun/ovirt-engine,walteryang47/ovirt-engine,yapengsong/ovirt-engine,yapengsong/ovirt-engine,eayun/ovirt-engine,yapengsong/ovirt-engine,zerodengxinchao/ovirt-engine,zerodengxinchao/ovirt-engine,zerodengxinchao/ovirt-engine,yingyun001/ovirt-engine,yingyun001/ovirt-engine,zerodengxinchao/ovirt-engine,yingyun001/ovirt-engine,eayun/ovirt-engine,eayun/ovirt-engine