Removal of KubeletConfigFile feature gate: Step 3 (final)

This PR completes the work started in https://github.com/kubernetes/kubernetes/pull/58760 by completely removing the KubeletConfigFile feature gate. We stopped setting the gate in test-infra in https://github.com/kubernetes/test-infra/pull/6490.

Removal of KubeletConfigFile feature gate: Step 3 (final)
63c93849 · Michael Taufen · 59bc6d0e · 63c93849
Commit 63c93849 authored Jan 29, 2018 by Michael Taufen
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kube_features.go pkg/features/kube_features.go +0 -6

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--- a/pkg/features/kube_features.go
+++ b/pkg/features/kube_features.go
@@ -37,11 +37,6 @@ const (
 	// alpha: v1.4
 	DynamicKubeletConfig utilfeature.Feature = "DynamicKubeletConfig"

-	// owner: @mtaufen
-	// alpha: v1.8
-	// This gate is now a no-op. It will be removed shortly.
-	KubeletConfigFile utilfeature.Feature = "KubeletConfigFile"
-
 	// owner: @pweil-
 	// alpha: v1.5
 	//
@@ -242,7 +237,6 @@ func init() {
 var defaultKubernetesFeatureGates = map[utilfeature.Feature]utilfeature.FeatureSpec{
 	AppArmor:                                    {Default: true, PreRelease: utilfeature.Beta},
 	DynamicKubeletConfig:                        {Default: false, PreRelease: utilfeature.Alpha},
-	KubeletConfigFile:                           {Default: false, PreRelease: utilfeature.Alpha}, // KubeletConfigFile is now a no-op gate on the path to removal.
 	ExperimentalHostUserNamespaceDefaultingGate: {Default: false, PreRelease: utilfeature.Beta},
 	ExperimentalCriticalPodAnnotation:           {Default: false, PreRelease: utilfeature.Alpha},
 	Accelerators:                                {Default: false, PreRelease: utilfeature.Alpha},