update cephfs volume

Author: carlory

content/en/docs/concepts/storage/persistent-volumes.md

@@ -519,8 +519,6 @@ please install corresponding CSI drivers.
   (**migration on by default** starting v1.23)
 * [`azureFile`](/docs/concepts/storage/volumes/#azurefile) - Azure File
   (**migration on by default** starting v1.24)
-* [`cephfs`](/docs/concepts/storage/volumes/#cephfs) - CephFS volume
-  (**deprecated** starting v1.28, no migration plan, support will be removed in a future release)
 * [`cinder`](/docs/concepts/storage/volumes/#cinder) - Cinder (OpenStack block storage)
   (**migration on by default** starting v1.21)
 * [`flexVolume`](/docs/concepts/storage/volumes/#flexvolume) - FlexVolume
@@ -534,18 +532,20 @@ please install corresponding CSI drivers.
 
 Older versions of Kubernetes also supported the following in-tree PersistentVolume types:
 
-* `photonPersistentDisk` - Photon controller persistent disk.
-  (**not available** starting v1.15)
-* `scaleIO` - ScaleIO volume.
-  (**not available** starting v1.21)
+* [`cephfs`](/docs/concepts/storage/volumes/#cephfs)
+  (**not available** starting v1.31)
 * `flocker` - Flocker storage.
   (**not available** starting v1.25)
+* `photonPersistentDisk` - Photon controller persistent disk.
+  (**not available** starting v1.15)
 * `quobyte` - Quobyte volume.
   (**not available** starting v1.25)
-* `storageos` - StorageOS volume.
-  (**not available** starting v1.25)
 * [`rbd`](/docs/concepts/storage/volumes/#rbd) - Rados Block Device (RBD) volume 
   (**not available** starting v1.31)
+* `scaleIO` - ScaleIO volume.
+  (**not available** starting v1.21)
+* `storageos` - StorageOS volume.
+  (**not available** starting v1.25)
 
 ## Persistent Volumes
 

content/en/docs/concepts/storage/volumes.md

@@ -124,26 +124,14 @@ Azure File CSI driver does not support using same volume with different fsgroups
 To disable the `azureFile` storage plugin from being loaded by the controller manager
 and the kubelet, set the `InTreePluginAzureFileUnregister` flag to `true`.
 
-### cephfs (deprecated) {#cephfs}
-{{< feature-state for_k8s_version="v1.28" state="deprecated" >}}
+### cephfs (removed) {#cephfs}
 
-{{< note >}}
-The Kubernetes project suggests that you use the [CephFS CSI](https://github.com/ceph/ceph-csi) third party
-storage driver instead.
-{{< /note >}}
-
-A `cephfs` volume allows an existing CephFS volume to be
-mounted into your Pod. Unlike `emptyDir`, which is erased when a pod is
-removed, the contents of a `cephfs` volume are preserved and the volume is merely
-unmounted. This means that a `cephfs` volume can be pre-populated with data, and
-that data can be shared between pods. The `cephfs` volume can be mounted by multiple
-writers simultaneously.
+<!-- maintenance note: OK to remove all mention of cephfs once the v1.30 release of
+Kubernetes has gone out of support -->
 
-{{< note >}}
-You must have your own Ceph server running with the share exported before you can use it.
-{{< /note >}}
+Kubernetes {{< skew currentVersion >}} does not include a `cephfs` volume type.
 
-See the [CephFS example](https://github.com/kubernetes/examples/tree/master/volumes/cephfs/) for more details.
+The `cephfs` in-tree storage driver was deprecated in the Kubernetes v1.28 release and then removed entirely in the v1.31 release.
 
 ### cinder (deprecated) {#cinder}