fix: make delete cluster (#656)

Signed-off-by: Jeffrey Tang <jeffrey@swirldslabs.com>

dev/README.md

@@ -9,9 +9,19 @@ Below are few helper commands to start the hedera network in the local kubernete
 - `make destroy-network`: uninstalls the helm chart
 - `make reset`: destroy the network, setup and start all nodes
 ## Prerequisite
+
+Before you can run the commands above, you will need to have the following installed locally:
+- make
+- helm
+- kubectl
+- kind
+  - using the link https://kind.sigs.k8s.io/docs/user/quick-start/#installing-from-release-binaries
+- docker
+
 Some resources are stored in the bucket(SwirldsRegression org): `fst-resources`. 
 You will need access to it and have `gsutil` installed locally
 
+
 ## Typical workflow
 
 ### Start node:

dev/scripts/main.sh

@@ -28,7 +28,6 @@ function destroy_cluster() {
   [[ -z "${NAMESPACE}" ]] && echo "ERROR: [destroy_cluster] Namespace name is required" && return 1
 
 	kind delete cluster -n "${CLUSTER_NAME}" || true
-	kubectl delete ns "${NAMESPACE}" || true
 }
 
 function deploy_shared() {