move IPv6DualStack feature to stable. (#104691)

* kube-proxy

* endpoints controller

* app: kube-controller-manager

* app: cloud-controller-manager

* kubelet

* app: api-server

* node utils + registry/strategy

* api: validation (comment removal)

* api:pod strategy (util pkg)

* api: docs

* core: integration testing

* kubeadm: change feature gate to GA

* service registry and rest stack

* move feature to GA

* generated

pkg/api/pod/util.go

@@ -490,32 +490,16 @@ func DropDisabledPodFields(pod, oldPod *api.Pod) {
 		podAnnotations    map[string]string
 		oldPodSpec        *api.PodSpec
 		oldPodAnnotations map[string]string
-		podStatus         *api.PodStatus
-		oldPodStatus      *api.PodStatus
 	)
 	if pod != nil {
 		podSpec = &pod.Spec
 		podAnnotations = pod.Annotations
-		podStatus = &pod.Status
 	}
 	if oldPod != nil {
 		oldPodSpec = &oldPod.Spec
 		oldPodAnnotations = oldPod.Annotations
-		oldPodStatus = &oldPod.Status
 	}
 	dropDisabledFields(podSpec, podAnnotations, oldPodSpec, oldPodAnnotations)
-	dropPodStatusDisabledFields(podStatus, oldPodStatus)
-}
-
-// dropPodStatusDisabledFields removes disabled fields from the pod status
-func dropPodStatusDisabledFields(podStatus *api.PodStatus, oldPodStatus *api.PodStatus) {
-	// trim PodIPs down to only one entry (non dual stack).
-	if !utilfeature.DefaultFeatureGate.Enabled(features.IPv6DualStack) &&
-		!multiplePodIPsInUse(oldPodStatus) {
-		if len(podStatus.PodIPs) != 0 {
-			podStatus.PodIPs = podStatus.PodIPs[0:1]
-		}
-	}
 }
 
 // dropDisabledFields removes disabled fields from the pod metadata and spec.
@@ -824,17 +808,6 @@ func ephemeralInUse(podSpec *api.PodSpec) bool {
 	return false
 }
 
-// podPriorityInUse returns true if status is not nil and number of PodIPs is greater than one
-func multiplePodIPsInUse(podStatus *api.PodStatus) bool {
-	if podStatus == nil {
-		return false
-	}
-	if len(podStatus.PodIPs) > 1 {
-		return true
-	}
-	return false
-}
-
 // SeccompAnnotationForField takes a pod seccomp profile field and returns the
 // converted annotation value
 func SeccompAnnotationForField(field *api.SeccompProfile) string {