Remove references to openstack and cinder

Signed-off-by: Davanum Srinivas <davanum@gmail.com>

pkg/features/kube_features.go

@@ -140,13 +140,6 @@ const (
 	// Enables the GCE PD in-tree driver to GCE CSI Driver migration feature.
 	CSIMigrationGCE featuregate.Feature = "CSIMigrationGCE"
 
-	// owner: @adisky
-	// alpha: v1.14
-	// beta: v1.18
-	//
-	// Enables the OpenStack Cinder in-tree driver to OpenStack Cinder CSI Driver migration feature.
-	CSIMigrationOpenStack featuregate.Feature = "CSIMigrationOpenStack"
-
 	// owner: @trierra
 	// alpha: v1.23
 	//
@@ -410,12 +403,6 @@ const (
 	// Disables the GCE PD in-tree driver.
 	InTreePluginGCEUnregister featuregate.Feature = "InTreePluginGCEUnregister"
 
-	// owner: @adisky
-	// alpha: v1.21
-	//
-	// Disables the OpenStack Cinder in-tree driver.
-	InTreePluginOpenStackUnregister featuregate.Feature = "InTreePluginOpenStackUnregister"
-
 	// owner: @trierra
 	// alpha: v1.23
 	//
@@ -923,8 +910,6 @@ var defaultKubernetesFeatureGates = map[featuregate.Feature]featuregate.FeatureS
 
 	CSIMigrationGCE: {Default: true, PreRelease: featuregate.GA, LockToDefault: true}, // GA in 1.25 (requires GCE PD CSI Driver)
 
-	CSIMigrationOpenStack: {Default: true, PreRelease: featuregate.GA, LockToDefault: true}, // remove in 1.26
-
 	CSIMigrationPortworx: {Default: false, PreRelease: featuregate.Beta}, // Off by default (requires Portworx CSI driver)
 
 	CSIMigrationRBD: {Default: false, PreRelease: featuregate.Alpha}, // Off by default (requires RBD CSI driver)
@@ -999,8 +984,6 @@ var defaultKubernetesFeatureGates = map[featuregate.Feature]featuregate.FeatureS
 
 	InTreePluginGCEUnregister: {Default: false, PreRelease: featuregate.Alpha},
 
-	InTreePluginOpenStackUnregister: {Default: false, PreRelease: featuregate.Alpha},
-
 	InTreePluginPortworxUnregister: {Default: false, PreRelease: featuregate.Alpha},
 
 	InTreePluginRBDUnregister: {Default: false, PreRelease: featuregate.Alpha},