Stop passing encoder/decoder to NewHumanReadablePrinter

We only need them if we've got unstructured/unknown data and we want to
convert it to typed objects.

Signed-off-by: Andy Goldstein <andy.goldstein@gmail.com>

pkg/cmd/util/output/output.go

@@ -28,9 +28,7 @@ import (
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/kubernetes/pkg/printers"
 
-	"github.com/heptio/ark/pkg/apis/ark/v1"
 	"github.com/heptio/ark/pkg/cmd/util/flag"
-	"github.com/heptio/ark/pkg/generated/clientset/versioned/scheme"
 	"github.com/heptio/ark/pkg/util/encode"
 )
 
@@ -155,11 +153,6 @@ func printTable(cmd *cobra.Command, obj runtime.Object) (bool, error) {
 // NewPrinter returns a printer for doing human-readable table printing of
 // Ark objects.
 func NewPrinter(cmd *cobra.Command) (*printers.HumanReadablePrinter, error) {
-	encoder, err := encode.EncoderFor("json")
-	if err != nil {
-		return nil, err
-	}
-
 	options := printers.PrintOptions{
 		NoHeaders:    flag.GetOptionalBoolFlag(cmd, "no-headers"),
 		ShowLabels:   GetShowLabelsValue(cmd),
@@ -167,8 +160,8 @@ func NewPrinter(cmd *cobra.Command) (*printers.HumanReadablePrinter, error) {
 	}
 
 	printer := printers.NewHumanReadablePrinter(
-		encoder,
-		scheme.Codecs.UniversalDecoder(v1.SchemeGroupVersion),
+		nil, // encoder, only needed if we want/need to convert unstructured/unknown to typed objects
+		nil, // decoder, only needed if we want/need to convert unstructured/unknown to typed objects
 		options,
 	)