Remove mqttui

Author: PatAltimore

articles/iot-operations/manage-mqtt-broker/howto-test-connection.md

@@ -119,15 +119,6 @@ The first option is to connect from within the cluster. This option uses the def
 
     The mosquitto client uses the same service account token and root CA cert to authenticate with the broker and subscribe to the topic.
 
-1. You can also use mqttui to connect to the broker using the service account token. The `--insecure` flag is required because mqttui doesn't support TLS certificate chain verification with a custom root CA cert.
-
-    > [!CAUTION]
-    > Using `--insecure` is not recommended for production scenarios. Only use it for testing or development purposes.
-
-    ```console
-    mqttui --broker mqtts://aio-mq-dmqtt-frontend:8883 --insecure -D CONNECT authentication-method 'K8S-SAT' -D CONNECT authentication-data $(cat /var/run/secrets/tokens/mq-sat)
-    ```
-
 1. To remove the pod, run `kubectl delete pod mqtt-client -n azure-iot-operations`.
 
 ## Connect clients from outside the cluster to default the TLS port