doc: Remove unwanted steps/details from upgrade doc

docs/ceph-csi-upgrade.md

@@ -3,7 +3,6 @@
 - [Ceph-csi Upgrade](#ceph-csi-upgrade)
    - [Pre-upgrade considerations](#pre-upgrade-considerations)
       - [Snapshot-controller and snapshot crd](#snapshot-controller-and-snapshot-crd)
-         - [Snapshot API version support matrix](#snapshot-api-version-support-matrix)
    - [Upgrading from previous releases](#upgrading-from-previous-releases)
    - [Upgrading from v3.8 to v3.9](#upgrading-from-v38-to-v39)
       - [Upgrading CephFS](#upgrading-cephfs)
@@ -15,15 +14,13 @@
             - [2.2 Update the CephFS Nodeplugin daemonset](#22-update-the-cephfs-nodeplugin-daemonset)
             - [2.3 Manual deletion of CephFS Nodeplugin daemonset pods](#23-manual-deletion-of-cephfs-nodeplugin-daemonset-pods)
             - [2.4 Modifying MountOptions in Storageclass and PersistentVolumes](#24-modifying-mountoptions-in-storageclass-and-persistentvolumes)
-         - [Delete removed CephFS PSP, Role and RoleBinding](#delete-removed-cephfs-psp-role-and-rolebinding)
       - [Upgrading RBD](#upgrading-rbd)
          - [3. Upgrade RBD Provisioner resources](#3-upgrade-rbd-provisioner-resources)
             - [3.1 Update the RBD Provisioner RBAC](#31-update-the-rbd-provisioner-rbac)
             - [3.2 Update the RBD Provisioner deployment](#32-update-the-rbd-provisioner-deployment)
          - [4. Upgrade RBD Nodeplugin resources](#4-upgrade-rbd-nodeplugin-resources)
             - [4.1 Update the RBD Nodeplugin RBAC](#41-update-the-rbd-nodeplugin-rbac)
             - [4.2 Update the RBD Nodeplugin daemonset](#42-update-the-rbd-nodeplugin-daemonset)
-         - [Delete removed RBD PSP, Role and RoleBinding](#delete-removed-rbd-psp-role-and-rolebinding)
       - [Upgrading NFS](#upgrading-nfs)
          - [5. Upgrade NFS Provisioner resources](#5-upgrade-nfs-provisioner-resources)
             - [5.1 Update the NFS Provisioner RBAC](#51-update-the-nfs-provisioner-rbac)
@@ -61,13 +58,6 @@ Its kubernetes distributor responsibility to install new snapshot
 controller and snapshot CRD. more info can be found
 [here](https://github.com/kubernetes-csi/external-snapshotter/tree/master#usage)
 
-#### Snapshot API version support matrix
-
-| Snapshot API version | Kubernetes Version   | Snapshot-Controller + CRDs Version | Sidecar Version |
-| -------------------- | -------------------- | ---------------------------------- | --------------- |
-| v1beta1              | v1.17 =< k8s < v1.20 | v2.x =< snapshot-controller < v4.x | sidecar >= v2.x |
-| v1                   | k8s >= v1.20         | snapshot-controller >= v4.x        | sidecar >= v2.x |
-
 **Note:** We recommend to use {sidecar, controller, crds} of same version
 
 ## Upgrading from previous releases
@@ -255,20 +245,6 @@ Follow the below steps to update the PersistentVolume's `MountOptions`:
 - and remove invalid mount options from `MountOptions` field
   in the PersistentVolume's using `kubectl edit pv <pv-name>`.
 
-#### Delete removed CephFS PSP, Role and RoleBinding
-
-As PSP is deprecated in Kubernetes v1.21.0. Delete PSP related objects as PSP
-support for CephFS is removed.
-
-```console
-kubectl delete psp cephfs-csi-provisioner-psp --ignore-not-found
-kubectl delete role cephfs-csi-provisioner-psp --ignore-not-found
-kubectl delete rolebinding cephfs-csi-provisioner-psp --ignore-not-found
-kubectl delete psp cephfs-csi-nodeplugin-psp --ignore-not-found
-kubectl delete role cephfs-csi-nodeplugin-psp --ignore-not-found
-kubectl delete rolebinding cephfs-csi-nodeplugin-psp --ignore-not-found
-```
-
 we have successfully upgraded cephfs csi from v3.8 to v3.9
 
 ### Upgrading RBD
@@ -288,7 +264,6 @@ Provisioner deployment
 $ kubectl apply -f deploy/rbd/kubernetes/csi-provisioner-rbac.yaml
 serviceaccount/rbd-csi-provisioner configured
 clusterrole.rbac.authorization.k8s.io/rbd-external-provisioner-runner configured
-clusterrole.rbac.authorization.k8s.io/rbd-external-provisioner-runner-rules configured
 clusterrolebinding.rbac.authorization.k8s.io/rbd-csi-provisioner-role configured
 role.rbac.authorization.k8s.io/rbd-external-provisioner-cfg configured
 rolebinding.rbac.authorization.k8s.io/rbd-csi-provisioner-role-cfg configured
@@ -323,7 +298,6 @@ nodeplugin daemonset
 $ kubectl apply -f deploy/rbd/kubernetes/csi-nodeplugin-rbac.yaml
 serviceaccount/rbd-csi-nodeplugin configured
 clusterrole.rbac.authorization.k8s.io/rbd-csi-nodeplugin configured
-clusterrole.rbac.authorization.k8s.io/rbd-csi-nodeplugin-rules configured
 clusterrolebinding.rbac.authorization.k8s.io/rbd-csi-nodeplugin configured
 ```
 
@@ -335,23 +309,6 @@ daemonset.apps/csi-rbdplugin configured
 service/csi-metrics-rbdplugin configured
 ```
 
-#### Delete removed RBD PSP, Role and RoleBinding
-
-As PSP is deprecated in Kubernetes v1.21.0. Delete PSP related objects as PSP
-support for RBD is removed.
-
-```console
-kubectl delete psp rbd-csi-provisioner-psp --ignore-not-found
-kubectl delete role rbd-csi-provisioner-psp --ignore-not-found
-kubectl delete rolebinding rbd-csi-provisioner-psp --ignore-not-found
-kubectl delete psp rbd-csi-nodeplugin-psp --ignore-not-found
-kubectl delete role rbd-csi-nodeplugin-psp --ignore-not-found
-kubectl delete rolebinding rbd-csi-nodeplugin-psp --ignore-not-found
-kubectl delete psp rbd-csi-vault-token-review-psp --ignore-not-found
-kubectl delete role rbd-csi-vault-token-review-psp --ignore-not-found
-kubectl delete rolebinding rbd-csi-vault-token-review-psp --ignore-not-found
-```
-
 we have successfully upgraded RBD csi from v3.8 to v3.9
 
 ### Upgrading NFS