code: public QYResultType delete(String userId){
          BeanUtil.requireNonNull(userId, "userId is null");
          String url = BASE_API_URL + "cgi-bin/user/delete?access_token=#&userid=" + userId;
          BaseResponse response = executeGet(url);
          return QYResultType.get(response.getErrcode());
      }
docs: 删除用户
  @param userId 用户ID
  @return 删除结果