removed upgrade stuff as caren will take care of it

Author: WinsonSou

examples/capi-quick-start/nutanix-cluster-hardened-clusterclass/worker/README.md

@@ -111,65 +111,4 @@ kubectl patch clusterclass nkp-nutanix-<VERSION> \
     "path":"/spec/workers/machineDeployments/0/template/bootstrap/ref/name",
     "value":"nkp-nutanix-worker-<VERSION>-hardened"
   }]'
-```
-
-## Handling Upgrades
-
-When upgrading to a new Nutanix Kubernetes Platform version, you'll need to create hardened templates for the new version. Follow these steps:
-
-1. Upgrade CAPI components first:
-
-```bash
-nkp upgrade capi-components
-```
-
-2. Identify the new worker template version and export it:
-
-```bash
-# List available templates after upgrade
-kubectl get kubeadmconfigtemplates.bootstrap.cluster.x-k8s.io
-
-# Export the new template (replace <NEW_VERSION> with the actual new version, e.g., v2.15.0)
-kubectl get kubeadmconfigtemplates.bootstrap.cluster.x-k8s.io nkp-nutanix-worker-<NEW_VERSION> -o yaml > nkp-nutanix-worker-<NEW_VERSION>.yaml
-```
-
-3. Create a new directory for the new version and copy the kustomization files there:
-
-```bash
-mkdir -p /path/to/hardened-clusters/kustomize/worker-<NEW_VERSION>
-cp /path/to/hardened-clusters/kustomize/worker/cis-mitigations-worker-patch.yaml /path/to/hardened-clusters/kustomize/worker-<NEW_VERSION>/
-cp /path/to/hardened-clusters/kustomize/worker/kustomization.yaml /path/to/hardened-clusters/kustomize/worker-<NEW_VERSION>/
-```
-
-4. Update the files in the new directory to use the new version:
-
-```bash
-# Edit the version in both files
-sed -i 's/<VERSION>/<NEW_VERSION>/g' /path/to/hardened-clusters/kustomize/worker-<NEW_VERSION>/cis-mitigations-worker-patch.yaml
-sed -i 's/<VERSION>/<NEW_VERSION>/g' /path/to/hardened-clusters/kustomize/worker-<NEW_VERSION>/kustomization.yaml
-```
-
-5. Apply the kustomization for the new version:
-
-```bash
-kubectl apply -k /path/to/hardened-clusters/kustomize/worker-<NEW_VERSION>
-```
-
-6. Patch the new cluster class to use the hardened template:
-
-```bash
-# Replace <NEW_VERSION> with the actual new version
-kubectl patch clusterclass nkp-nutanix-<NEW_VERSION> \
-  --type json \
-  -p='[{
-    "op":"replace",
-    "path":"/spec/workers/machineDeployments/0/template/bootstrap/ref/name",
-    "value":"nkp-nutanix-worker-<NEW_VERSION>-hardened"
-  }]'
-```
-
-7. Upgrade the cluster using the new patched cluster class:
-
-```bash
-nkp upgrade cluster nutanix <additional_variables> --cluster-class nkp-nutanix-<NEW_VERSION>
-```
+```