优化dnc，设备结构树查询，优化原有代码

lyh

2025-04-11 2cf1565485060fd56e1f1f1cffbba7a4d70d42a6

 lxzn-module-mdc/src/main/java/org/jeecg/modules/mdc/vo/MdcDowntimeVo.java

@@ -29,10 +29,6 @@
     * 层级ID
     */
    private String parentId;
    /**
     * 设备Id
     */
    private String equipmentId;

    /**
     * 设备ids