remove cmdutil dependency

cmd/kube-aggregator/main.go

@@ -23,7 +23,6 @@ import (
 
 	"k8s.io/apiserver/pkg/util/logs"
 	"k8s.io/kubernetes/cmd/kube-aggregator/pkg/cmd/server"
-	cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
 
 	// force compilation of packages we'll later rely upon
 	_ "k8s.io/kubernetes/cmd/kube-aggregator/pkg/apis/apiregistration/install"
@@ -44,6 +43,6 @@ func main() {
 	cmd := server.NewCommandStartAggregator(os.Stdout, os.Stderr)
 	cmd.Flags().AddGoFlagSet(flag.CommandLine)
 	if err := cmd.Execute(); err != nil {
-		cmdutil.CheckErr(err)
+		panic(err)
 	}
 }