UPSTREAM: <carry>: Fix import after backporting

Author: tjungblu

staging/src/k8s.io/apiserver/pkg/endpoints/handlers/delete_test.go

@@ -31,7 +31,6 @@ import (
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
 	"k8s.io/apimachinery/pkg/runtime/serializer"
-	"k8s.io/apiserver/pkg/admission"
 	auditinternal "k8s.io/apiserver/pkg/apis/audit"
 	"k8s.io/apiserver/pkg/audit"
 	"k8s.io/apiserver/pkg/endpoints/handlers/negotiation"