To uninstall Stash Community edition, run the following command:
In Helm 3, release names are scoped to a namespace. So, provide the namespace you used to install the operator when installing.
$ helm uninstall stash --namespace kube-system
$ helm delete stash
If you prefer to not use Helm, you can generate YAMLs from Stash chart and uninstall using kubectl.
$ helm template stash appscode/stash --namespace kube-system | kubectl delete -f -