16.5.
$ oc get subscription.operators.coreos.com serverless-operator -n openshift-serverless -o yaml | grep currentCSVcurrentCSV: serverless-operator.v1.28.0$ oc delete subscription.operators.coreos.com serverless-operator -n openshift-serverlesssubscription.operators.coreos.com "serverless-operator" deleted$ oc delete clusterserviceversion serverless-operator.v1.28.0 -n openshift-serverlessclusterserviceversion.operators.coreos.com "serverless-operator.v1.28.0" deleted