code: async def async_delete_api_key(session, host, port, api_key):
      
      url = 'http://{host}:{port}/api/{api_key}/config/whitelist/{api_key}'.format(
          host=host, port=str(port), api_key=api_key)
  
      response = await async_request(session.delete, url)
  
      _LOGGER.info(response)
docs: Delete API key from deCONZ.