Remove nitrogen from n-odl grafana
Remove nitrogen from n-odl grafana

The OpenDaylight version nitrogen has been marked EOL and thus no longer
supported.

This patch removes the monitoring of the jobs for that version.

Depends-On: https://review.openstack.org/572362
Change-Id: I50bb98f947f64d483381cd67980dc5d95f550adf

openstack-infra/project-config,openstack-infra/project-config