code: public ResultType deleteGroup(Integer groupId){
          BeanUtil.requireNonNull(groupId, "groupId is null");
          LOG.debug("删除分组.....");
          String url = BASE_API_URL + "cgi-bin/groups/delete?access_token=#";
          Map<String, Object> param = new HashMap<String, Object>();
          Map<String, Integer> groups = new HashMap<String, Integer>();
          groups.put("id", groupId);
          param.put("group", groups);
          BaseResponse response = executePost(url, JSONUtil.toJson(param));
          return ResultType.get(response.getErrcode());
      }
docs: 删除分组
  @param groupId 分组ID
  @return 删除结果