Revert "Merge pull request 89667 from kmala/kubelet"

This reverts commit fa785a5706, reversing
changes made to cf13f8d994.

pkg/kubelet/container/runtime.go

@@ -285,6 +285,7 @@ type PodStatus struct {
 	// Status of containers in the pod.
 	ContainerStatuses []*ContainerStatus
 	// Status of the pod sandbox.
+	// Only for kuberuntime now, other runtime may keep it nil.
 	SandboxStatuses []*runtimeapi.PodSandboxStatus
 }