Remove todos about addin usage to Pods.

Usage in Pods would be quite noisy when watching pods.
People should get usage from heapster, or from
some other object TBD.

pkg/api/v1beta3/types.go

@@ -419,8 +419,6 @@ type ContainerStatus struct {
 	RestartCount int `json:"restartCount" yaml:"restartCount"`
 	// TODO(dchen1107): Introduce our own NetworkSettings struct here?
 	// TODO(dchen1107): Which image the container is running with?
-	// TODO(dchen1107): Once we have done with integration with cadvisor, resource
-	// usage should be included.
 }
 
 // PodInfo contains one entry for every container with available info.