code: func deleteDeployment(client kubernetes.Interface, namespace string) error {
  	policy := metav1.DeletePropagationBackground
  	err := client.AppsV1().Deployments(namespace).Delete(deploymentName, &metav1.DeleteOptions{
  		PropagationPolicy: &policy,
  	})
  	return ingoreNotFound(err)
  }
docs: // deleteDeployment deletes the Tiller Deployment resource