[enterprise-4.6] removing RHEL supported version from OKD#31394

vikram-redhat merged 1 commit intoopenshift:enterprise-4.6openshift/openshift-docs:enterprise-4.6from

openshift-cherrypick-robot:cherry-pick-28878-to-enterprise-4.6openshift-cherrypick-robot/openshift-docs:cherry-pick-28878-to-enterprise-4.6Copy head branch name to clipboard