message: docs: removing entities from HASS
  * Add section on removing entities from HASS
  See
  * Update homeassistant.md
  * style: fix lint
  * Update homeassistant.md
diff: @@ -230,3 +230,15 @@ The main template is like the thermostat template. The things to add are:
  }
  }
  ```
  +
  +## Troubleshooting
  +
  +### Removing or resetting HASS entities
  +
  +If needed, it is possible to remove and reset entities added to HASS via MQTT discovery. These documents are pushed via MQTT with the `Retained` flag set, so even if an entity disappears from **zwavejs2mqtt**, it still remains in HASS.
  +
  +To remove an entity in HASS, you simply need to remove the retained message in the HASS discovery topics, by default `homeassistant/..`.
  +
  +This can be done with [MQTT Explorer](http://mqtt-explorer.com/) or CLI tools like [`mosquitto_pub`](https://mosquitto.org/man/mosquitto_pub-1.html).
  +
  +Note that in order for a removed entity to appear again, it must be published by **zwavejs2mqtt** again. This happens automatically for new devices, if enabled, alternatively it can be done manually by selecting the node in **zwavejs2mqtt**, and then for each HASS device clicking `Rediscover Node`.
  