code: def delete_user(username,
                  token_manager=None,
                  app_url=defaults.APP_URL):
      
      account_id = get_account_id(username,
                                  token_manager=token_manager,
                                  app_url=app_url)
  
      headers = token_manager.get_access_token_headers()
      auth_url = environment.get_auth_url(app_url=app_url)
      url = "%s/api/v1/accounts/%s" % (auth_url, account_id)
      response = requests.delete(url, headers=headers)
  
      if response.status_code == 204:
          return response.text
  
      else:
          raise JutException('Error %s; %s' % (response.status_code, response.text))
docs: delete a user by its account_id and with the access_token from that same
      user as only a user may delete him/her-self