refactor builder in kubectl factory

pkg/kubectl/cmd/patch.go

@@ -153,13 +153,7 @@ func RunPatch(f cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []strin
 		return fmt.Errorf("unable to parse %q: %v", patch, err)
 	}
 
-	mapper, typer, err := f.UnstructuredObject()
-	if err != nil {
-		return err
-	}
-
-	r := f.NewBuilder().
-		Unstructured(f.UnstructuredClientForMapping, mapper, typer).
+	r := f.NewUnstructuredBuilder().
 		ContinueOnError().
 		NamespaceParam(cmdNamespace).DefaultNamespace().
 		FilenameParam(enforceNamespace, &options.FilenameOptions).