You try to manually delete EC-2 instances (both worker nodes and the master node of Kubernetes), but this does not work. The EC-2 instances are re-created. How do you delete the cluster?
Install and configure the AWS CLI; if you need assistance, see this posting.
Run these three commands but substitute "contint.k8s.local" with the name of your cluster:
kops delete cluster --name contint.k8s.local --yes