The productized serverless-operator.v1.4.0 CSV contains

                - name: IMAGE_default
                  value: registry.svc.ci.openshift.org/openshift/knative-v0.11.1:knative-serving-${NAME}

The value references a hostname of an internal openshift CI service.
We should be removing the IMAGE_default env on productization, as the value is wrong for the producitzed CSV and because it doesn't do anything anyway (as we define all the IMAGE_ envs explicitly)