Update go dependencies

vendor/k8s.io/apiextensions-apiserver/pkg/features/OWNERS

@@ -1,2 +0,0 @@
-approvers:
-- feature-approvers

vendor/k8s.io/apiextensions-apiserver/pkg/features/kube_features.go

@@ -1,55 +0,0 @@
-/*
-Copyright 2017 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-package features
-
-import (
-	utilfeature "k8s.io/apiserver/pkg/util/feature"
-)
-
-const (
-	// Every feature gate should add method here following this template:
-	//
-	// // owner: @username
-	// // alpha: v1.4
-	// MyFeature() bool
-
-	// owner: @sttts, @nikhita
-	// alpha: v1.8
-	// beta: v1.9
-	//
-	// CustomResourceValidation is a list of validation methods for CustomResources
-	CustomResourceValidation utilfeature.Feature = "CustomResourceValidation"
-
-	// owner: @sttts, @nikhita
-	// alpha: v1.10
-	// beta: v1.11
-	//
-	// CustomResourceSubresources defines the subresources for CustomResources
-	CustomResourceSubresources utilfeature.Feature = "CustomResourceSubresources"
-)
-
-func init() {
-	utilfeature.DefaultFeatureGate.Add(defaultKubernetesFeatureGates)
-}
-
-// defaultKubernetesFeatureGates consists of all known Kubernetes-specific feature keys.
-// To add a new feature, define a key for it above and add it here. The features will be
-// available throughout Kubernetes binaries.
-var defaultKubernetesFeatureGates = map[utilfeature.Feature]utilfeature.FeatureSpec{
-	CustomResourceValidation:   {Default: true, PreRelease: utilfeature.Beta},
-	CustomResourceSubresources: {Default: true, PreRelease: utilfeature.Beta},
-}