Remove deprecated feature flags

pkg/features/kube_features.go

@@ -173,13 +173,6 @@ const (
 	// Enable nodes to exclude themselves from service load balancers
 	ServiceNodeExclusion utilfeature.Feature = "ServiceNodeExclusion"
 
-	// owner @brendandburns
-	// deprecated: v1.10
-	//
-	// Enable the service proxy to contact external IP addresses. Note this feature is present
-	// only for backward compatibility, it will be removed in the 1.11 release.
-	ServiceProxyAllowExternalIPs utilfeature.Feature = "ServiceProxyAllowExternalIPs"
-
 	// owner: @jsafrane
 	// alpha: v1.9
 	//
@@ -241,13 +234,6 @@ const (
 	// Enable Hyper-V containers on Windows
 	HyperVContainer utilfeature.Feature = "HyperVContainer"
 
-	// owner: @joelsmith
-	// deprecated: v1.10
-	//
-	// Mount secret, configMap, downwardAPI and projected volumes ReadOnly. Note: this feature
-	// gate is present only for backward compatibility, it will be removed in the 1.11 release.
-	ReadOnlyAPIDataVolumes utilfeature.Feature = "ReadOnlyAPIDataVolumes"
-
 	// owner: @k82cn
 	// alpha: v1.10
 	//
@@ -433,6 +419,5 @@ var defaultKubernetesFeatureGates = map[utilfeature.Feature]utilfeature.FeatureS
 	apiextensionsfeatures.CustomResourceSubresources: {Default: true, PreRelease: utilfeature.Beta},
 
 	// features that enable backwards compatibility but are scheduled to be removed
-	ServiceProxyAllowExternalIPs: {Default: false, PreRelease: utilfeature.Deprecated},
-	ReadOnlyAPIDataVolumes:       {Default: true, PreRelease: utilfeature.Deprecated},
+	// ...
 }

pkg/kubelet/kubelet_pods.go

@@ -232,7 +232,7 @@ func makeMounts(pod *v1.Pod, podDir string, container *v1.Container, hostName, h
 		}
 		glog.V(5).Infof("Pod %q container %q mount %q has propagation %q", format.Pod(pod), container.Name, mount.Name, propagation)
 
-		mustMountRO := vol.Mounter.GetAttributes().ReadOnly && utilfeature.DefaultFeatureGate.Enabled(features.ReadOnlyAPIDataVolumes)
+		mustMountRO := vol.Mounter.GetAttributes().ReadOnly
 
 		mounts = append(mounts, kubecontainer.Mount{
 			Name:           mount.Name,

pkg/registry/core/service/storage/BUILD

@@ -55,7 +55,6 @@ go_library(
         "//pkg/apis/core:go_default_library",
         "//pkg/apis/core/helper:go_default_library",
         "//pkg/apis/core/validation:go_default_library",
-        "//pkg/features:go_default_library",
         "//pkg/printers:go_default_library",
         "//pkg/printers/internalversion:go_default_library",
         "//pkg/printers/storage:go_default_library",
@@ -76,7 +75,6 @@ go_library(
         "//staging/src/k8s.io/apiserver/pkg/registry/generic/registry:go_default_library",
         "//staging/src/k8s.io/apiserver/pkg/registry/rest:go_default_library",
         "//staging/src/k8s.io/apiserver/pkg/util/dryrun:go_default_library",
-        "//staging/src/k8s.io/apiserver/pkg/util/feature:go_default_library",
         "//vendor/github.com/golang/glog:go_default_library",
     ],
 )

pkg/registry/core/service/storage/rest.go

@@ -38,13 +38,11 @@ import (
 	genericapirequest "k8s.io/apiserver/pkg/endpoints/request"
 	"k8s.io/apiserver/pkg/registry/rest"
 	"k8s.io/apiserver/pkg/util/dryrun"
-	utilfeature "k8s.io/apiserver/pkg/util/feature"
 
 	apiservice "k8s.io/kubernetes/pkg/api/service"
 	api "k8s.io/kubernetes/pkg/apis/core"
 	"k8s.io/kubernetes/pkg/apis/core/helper"
 	"k8s.io/kubernetes/pkg/apis/core/validation"
-	"k8s.io/kubernetes/pkg/features"
 	registry "k8s.io/kubernetes/pkg/registry/core/service"
 	"k8s.io/kubernetes/pkg/registry/core/service/ipallocator"
 	"k8s.io/kubernetes/pkg/registry/core/service/portallocator"
@@ -483,11 +481,9 @@ func (rs *REST) ResourceLocation(ctx context.Context, id string) (*url.URL, http
 				// but in the expected case we'll only make one.
 				for try := 0; try < len(ss.Addresses); try++ {
 					addr := ss.Addresses[(addrSeed+try)%len(ss.Addresses)]
-					if !utilfeature.DefaultFeatureGate.Enabled(features.ServiceProxyAllowExternalIPs) {
-						if err := isValidAddress(ctx, &addr, rs.pods); err != nil {
-							utilruntime.HandleError(fmt.Errorf("Address %v isn't valid (%v)", addr, err))
-							continue
-						}
+					if err := isValidAddress(ctx, &addr, rs.pods); err != nil {
+						utilruntime.HandleError(fmt.Errorf("Address %v isn't valid (%v)", addr, err))
+						continue
 					}
 					ip := addr.IP
 					port := int(ss.Ports[i].Port)