Stop generating federation internal clientset

hack/update-codegen.sh

@@ -63,7 +63,6 @@ ${clientgen} "$@"
 ${clientgen} -t "$@" --output-base "${KUBE_ROOT}/vendor"
 ${clientgen} --output-base "${KUBE_ROOT}/vendor" --clientset-path="k8s.io/client-go" --clientset-name="kubernetes" --input-base="k8s.io/kubernetes/vendor/k8s.io/api" --input="${GV_DIRS_CSV}" "$@"
 # Clientgen for federation clientset.
-${clientgen} --clientset-name=federation_internalclientset --clientset-path=k8s.io/kubernetes/federation/client/clientset_generated --input="../../federation/apis/federation/","api/","extensions/","batch/","autoscaling/" --included-types-overrides="api/Service,api/Namespace,extensions/ReplicaSet,api/Secret,extensions/Ingress,extensions/Deployment,extensions/DaemonSet,api/ConfigMap,api/Event,batch/Job,autoscaling/HorizontalPodAutoscaler"   "$@"
 ${clientgen} --clientset-name=federation_clientset --clientset-path=k8s.io/kubernetes/federation/client/clientset_generated --input-base="k8s.io/kubernetes/vendor/k8s.io/api" --input="../../../federation/apis/federation/v1beta1","core/v1","extensions/v1beta1","batch/v1","autoscaling/v1" --included-types-overrides="core/v1/Service,core/v1/Namespace,extensions/v1beta1/ReplicaSet,core/v1/Secret,extensions/v1beta1/Ingress,extensions/v1beta1/Deployment,extensions/v1beta1/DaemonSet,core/v1/ConfigMap,core/v1/Event,batch/v1/Job,autoscaling/v1/HorizontalPodAutoscaler"   "$@"
 
 listergen_internal_apis=(