document how to uninstall KLT

[StackScribe]

Add "Uninstall KLT" page to the Installation section. We should get this done then reference it from the Getting Started guides. If someone installed this into an existing cluster, they might want to remove it after doing the exercises. So I am adding this to the #1297 epic

Some notes:

kubectl delete mutatingwebhookconfigurations.admissionregistration.k8s.io klc-mutating-webhook-configuration

NAMESPACE=monitoring
kubectl proxy &
kubectl get namespace $NAMESPACE -o json |jq '.spec = {"finalizers":[]}' >temp.json
curl -k -H "Content-Type: application/json" -X PUT --data-binary @temp.json 127.0.0.1:8001/api/v1/namespaces/$NAMESPACE/finalize

To check if a mutating web hook exists:
kubectl get mutatingwebhookconfigurations.admissionregistration.k8s.io

[agardnerIT]

I believe helm would handle that for you automatically (if you used helm to install)

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be
closed if no further activity occurs. Thank you for your contributions.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be
closed if no further activity occurs. Thank you for your contributions.