Automatic merge from submit-queue (batch tested with PRs 57550, 60089). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. Fix inconsistent comment message **What this PR does / why we need it**: remove dead code in `/pkg/proxy/apis/kubeproxyconfig/validation/validation.go` - see duplicated codes in https://github.com/kubernetes/kubernetes/blob/master/pkg/proxy/apis/kubeproxyconfig/types.go#L155-L169 **Which issue(s) this PR fixes**: **Special notes for your reviewer**: **Release note**: ```release-note NONE ```