diff --git a/task/error.go b/task/error.go
index 2b840ae3..5063de5d 100644
--- a/task/error.go
+++ b/task/error.go
@@ -327,23 +327,3 @@ func (e *QuotaExceeded) Retry() (r bool) {
 	r = true
 	return
 }
-
-// NotTerminated report pod/container not terminated.
-type NotTerminated struct {
-	Kind string
-	Name string
-}
-
-func (e *NotTerminated) Error() string {
-	return fmt.Sprintf("%s: '%s' not terminated as expected.", e.Kind, e.Name)
-}
-
-func (e *NotTerminated) Is(err error) (matched bool) {
-	var inst *NotTerminated
-	matched = errors.As(err, &inst)
-	return
-}
-
-func (e *NotTerminated) Retry() (r bool) {
-	return
-}