code refactor

pkg/kubelet/container/runtime.go

@@ -428,8 +428,6 @@ type RunContainerOptions struct {
 	// this directory will be used to create and mount the log file to
 	// container.TerminationMessagePath
 	PodContainerDir string
-	// The parent cgroup to pass to Docker
-	CgroupParent string
 	// The type of container rootfs
 	ReadOnly bool
 	// hostname for pod containers

pkg/kubelet/kubelet_pods.go

@@ -436,8 +436,6 @@ func (kl *Kubelet) GenerateRunContainerOptions(pod *v1.Pod, container *v1.Contai
 		return nil, err
 	}
 
-	cgroupParent := kl.GetPodCgroupParent(pod)
-	opts.CgroupParent = cgroupParent
 	hostname, hostDomainName, err := kl.GeneratePodHostNameAndDomain(pod)
 	if err != nil {
 		return nil, err