First, remove all team namespaces and corresponding cluster queues.
Then to uninstall the MLBatch controllers and reclaim the corresponding namespaces, do the following:
# Delete operators and CRDs
kubectl delete -k setup.k8s/appwrapper/base
kubectl delete -k setup.k8s/kueue
kubectl delete -k setup.k8s/kuberay
kubectl delete -k setup.k8s/training-operator/base
# Delete namespace
kubectl delete namespace mlbatch-system
# Delete clusterole
kubectl delete clusterrole mlbatch-edit
# Coscheduler uninstall
helm uninstall -n scheduler-plugins scheduler-plugins
kubectl delete namespace scheduler-plugins
# Sakkara uninstall
helm uninstall -n sakkara-scheduler sakkara-scheduler
kubectl delete namespace sakkara-scheduler