diff --git a/command/testing.go b/command/testing.go
index e12cc38e3..367d510bb 100644
--- a/command/testing.go
+++ b/command/testing.go
@@ -2,7 +2,6 @@ package command
 
 import (
 	"bytes"
-	"errors"
 	"fmt"
 
 	"github.com/cli/cli/api"
@@ -102,18 +101,6 @@ func RunCommand(args string) (*cmdOut, error) {
 	return &cmdOut{&outBuf, &errBuf}, err
 }
 
-type errorStub struct {
-	message string
-}
-
-func (s errorStub) Output() ([]byte, error) {
-	return nil, errors.New(s.message)
-}
-
-func (s errorStub) Run() error {
-	return errors.New(s.message)
-}
-
 func stubTerminal(connected bool) func() {
 	isTerminal := utils.IsTerminal
 	utils.IsTerminal = func(_ interface{}) bool {