code: def token_delete(remote, token=''):
      
      session_key = token_session_key(remote.name)
      return session.pop(session_key, None)
docs: Remove OAuth access tokens from session.
  
      :param remote: The remote application.
      :param token: Type of token to get. Data passed from ``oauth.request()`` to
          identify which token to retrieve. (Default: ``''``)
      :returns: The token.