refactor builder in kubectl factory

pkg/kubectl/resource/builder.go

@@ -26,7 +26,6 @@ import (
 
 	"k8s.io/apimachinery/pkg/api/meta"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	"k8s.io/apimachinery/pkg/labels"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
@@ -170,17 +169,6 @@ func (b *Builder) Local(mapperFunc ClientMapperFunc) *Builder {
 	return b
 }
 
-// Unstructured updates the builder's ClientMapper, RESTMapper,
-// ObjectTyper, and codec for working with unstructured api objects
-func (b *Builder) Unstructured(mapperFunc ClientMapperFunc, mapper meta.RESTMapper, typer runtime.ObjectTyper) *Builder {
-	b.mapper.RESTMapper = mapper
-	b.mapper.ObjectTyper = typer
-	b.mapper.Decoder = unstructured.UnstructuredJSONScheme
-	b.mapper.ClientMapper = ClientMapperFunc(mapperFunc)
-
-	return b
-}
-
 // URL accepts a number of URLs directly.
 func (b *Builder) URL(httpAttemptCount int, urls ...*url.URL) *Builder {
 	for _, u := range urls {