def delete(key,
           host=DEFAULT_HOST,
           port=DEFAULT_PORT,
           time=DEFAULT_TIME):
    if not isinstance(time, integer_types):
        raise SaltInvocationError('\'time\' must be an integer')
    conn = _connect(host, port)
    _check_stats(conn)
    return bool(conn.delete(key, time))
Delete a key from memcache server
dataset/ETHPy150Open saltstack/salt/salt/modules/memcached.py/delete