TestGrid shows that this observers-resource-watch container has been failing for a long time for the single node live ISO jobs. This has largely gone under the radar since sippy would not report this as a failure. Since we aren't using this info, we should just remove the observer from these jobs.

https://testgrid.k8s.io/redhat-openshift-ocp-release-4.12-informing#periodic-ci-openshift-release-master-nightly-4.12-e2e-metal-ovn-single-node-with-worker-live-iso