Problem deleting ZigBee things - cached in adapter?

See here: https://github.com/mozilla-iot/zigbee-adapter/issues/174

Essentially, do the following:

  1. Stop the gateway, e.g. sudo systemctl stop mozilla-iot-gateway
  2. Open ~/.mozilla-iot/data/zigbee-adapter/zb-xxxxxxxxxxxxxxxx.json
  3. Remove any nodes you no longer want.
  4. Save the file.
  5. Start the gateway: sudo systemctl start mozilla-iot-gateway