Update cortex cluster down message

Author: deliahu

manager/uninstall.sh

@@ -20,5 +20,4 @@ echo -e "spinning down the cluster ...\n"
 
 eksctl delete cluster --name=$CORTEX_CLUSTER_NAME --region=$CORTEX_REGION
 
-echo -e "\n✓ spun down the cluster"
-echo "✓ eks cloudformation stack (eksctl-${CORTEX_CLUSTER_NAME}-cluster) deletion in progress: https://${CORTEX_REGION}.console.aws.amazon.com/cloudformation"
+echo "✓ please check cloudformation to ensure that all resources for the ${CORTEX_CLUSTER_NAME} cluster are successfully deleted: https://${CORTEX_REGION}.console.aws.amazon.com/cloudformation"