def delpoi():
    """
    @api {post} /map/collect/delpoi 删除收藏
    @apiVersion 1.0.0
    @apiGroup Collect
    @apiDescription 删除收藏

    @apiParam (Headers) {String} token 令牌
    @apiParam (Headers) {String} device_token 设备令牌
    @apiParam (Headers) {String} content_type 内容类型
    @apiParam (Headers) {String} timestamp 时间戳
    @apiParam (Headers) {String} location 经纬度

    @apiParam (Body) {String} poi_id poi_id

    @apiSuccess (Success) {String} data 成功标识

    @apiSuccessExample {json} Success-Response:
    {
        "data": "Success.",
        "req_id": "r_049b93db7754407bb872aaee3d28f352",
        "err_resp": {
            "code": "0",
            "msg": null
        }
    }

    @apiError (Error) 21020 No poi_id in the request params

    @apiErrorExample {json} Error-Response:
    {
        "err_resp": {
            "code": "21020",
            "msg": "No poi_id in the request params!"
        },
        "req_id": "r_da328a55dfbc46bda249122030b8677d"
    }
    """
