Deleted ovirt check from vdsm-restore-net-config

Check if the machine is ovirt node prevented from proper network
restoration. Deleted condition is no longer needed.

Change-Id: Iae86110fbbdeca7b27e3528fdfaaa1a7dfb88e26
Bug-Url: https://bugzilla.redhat.com/979081
Signed-off-by: Petr Sebek <psebek@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/16847
Reviewed-by: Dan Kenigsberg <danken@redhat.com>