Unsubscribe users from a discussion.

    :param recID: record ID corresponding to the discussion we want to
                  unsubscribe the user
    :param uid: user id
    :return 1 if successful, 0 if not

def unsubscribe_user_from_discussion(recID, uid):
    """
    Unsubscribe users from a discussion.

    :param recID: record ID corresponding to the discussion we want to
                  unsubscribe the user
    :param uid: user id
    :return 1 if successful, 0 if not
    """
    query = """DELETE FROM "cmtSUBSCRIPTION"
                     WHERE id_bibrec=%s AND id_user=%s"""
    params = (recID, uid)
    try:
        res = run_sql(query, params)
    except:
        return 0
    if res > 0:
        return 1
    return 0