docs: update NOTES

Author: wrn14897

charts/hdx-oss-v2/templates/NOTES.txt

@@ -4,10 +4,6 @@ WARNING: THIS CHART IS DEPRECATED
 
 The 'hdx-oss-v2' chart has been deprecated and renamed to 'clickstack'.
 
-Please migrate to the new chart:
-  helm repo update
-  helm upgrade {{ .Release.Name }} hyperdx/clickstack --reuse-values
-
 For more information, see: https://github.com/hyperdxio/helm-charts
 
 ================================================================================
@@ -42,4 +38,4 @@ Application Access:
 {{- end }}
 
 To verify the deployment status, run:
-  kubectl get pods -l "app.kubernetes.io/name={{ include "hdx-oss.name" . }}" 
+  kubectl get pods -l "app.kubernetes.io/name={{ include "hdx-oss.name" . }}"