Delete all the guidance to use the public mosquitto broker. (#340)

FreeRTOS-Plus/Demo/coreMQTT_Windows_Simulator/MQTT_Keep_Alive/demo_config.h

@@ -98,12 +98,6 @@
  * Virtual Private Network(VPN), connection to the Mosquitto broker may not
  * work.
  *
- * As an alternative option, a publicly hosted Mosquitto broker can also be
- * used as an MQTT broker end point. This can be done by updating the config
- * democonfigMQTT_BROKER_ENDPOINT to "test.mosquitto.org". However, this is not
- * recommended due the possible downtimes of the broker as indicated by the
- * documentation in https://test.mosquitto.org/.
- *
  * #define democonfigMQTT_BROKER_ENDPOINT				"insert here."
  */
 

FreeRTOS-Plus/Demo/coreMQTT_Windows_Simulator/MQTT_Plain_Text/demo_config.h

@@ -98,12 +98,6 @@
  * Virtual Private Network(VPN), connection to the Mosquitto broker may not
  * work.
  *
- * As an alternative option, a publicly hosted Mosquitto broker can also be
- * used as an MQTT broker end point. This can be done by updating the config
- * democonfigMQTT_BROKER_ENDPOINT to "test.mosquitto.org". However, this is not
- * recommended due the possible downtimes of the broker as indicated by the
- * documentation in https://test.mosquitto.org/.
- *
  * #define democonfigMQTT_BROKER_ENDPOINT				"insert here."
  */
 

FreeRTOS-Plus/Demo/coreMQTT_Windows_Simulator/MQTT_Serializer/demo_config.h

@@ -98,12 +98,6 @@
  * Virtual Private Network(VPN), connection to the Mosquitto broker may not
  * work.
  *
- * As an alternative option, a publicly hosted Mosquitto broker can also be
- * used as an MQTT broker end point. This can be done by updating the config
- * democonfigMQTT_BROKER_ENDPOINT to "test.mosquitto.org". However, this is not
- * recommended due the possible downtimes of the broker as indicated by the
- * documentation in https://test.mosquitto.org/.
- *
  * #define democonfigMQTT_BROKER_ENDPOINT				"insert here."
  */