acknowledge that creation of a restmapper can fail and that we cannot have a default

pkg/kubectl/cmd/rollout/rollout_resume.go

@@ -21,7 +21,6 @@ import (
 
 	"github.com/spf13/cobra"
 
-	"k8s.io/apimachinery/pkg/api/meta"
 	"k8s.io/apimachinery/pkg/types"
 	utilerrors "k8s.io/apimachinery/pkg/util/errors"
 	"k8s.io/kubernetes/pkg/api/legacyscheme"
@@ -43,7 +42,6 @@ type ResumeConfig struct {
 	ToPrinter  func(string) (printers.ResourcePrinterFunc, error)
 
 	Resumer func(object *resource.Info) ([]byte, error)
-	Mapper  meta.RESTMapper
 	Infos   []*resource.Info
 
 	genericclioptions.IOStreams
@@ -103,8 +101,6 @@ func (o *ResumeConfig) CompleteResume(f cmdutil.Factory, cmd *cobra.Command, arg
 		return cmdutil.UsageErrorf(cmd, "%s", cmd.Use)
 	}
 
-	o.Mapper = f.RESTMapper()
-
 	o.Resumer = f.Resumer
 
 	cmdNamespace, enforceNamespace, err := f.DefaultNamespace()