删除多余目录

Signed-off-by: Nli-yan339 <liyan339@h-partners.com>

zh-cn/device-dev/quick-start/Readme-CN.md

@@ -19,7 +19,6 @@
             - [烧录](quickstart-ide-lite-steps-hi3516-burn.md)
             - [运行](quickstart-ide-lite-steps-hi3516-running.md)
     - 附录
-        - 开发板介绍
         - [Hi3861开发板介绍](quickstart-ide-lite-introduction-hi3861.md)
         - [Hi3516开发板介绍](quickstart-ide-lite-introduction-hi3516.md)
 - 轻量和小型系统快速入门（安装包方式）
@@ -67,7 +66,6 @@
             - [烧录](quickstart-ide-standard-running-rk3568-burning.md)
             - [运行](quickstart-ide-standard-running-rk3568-running.md)
     - 附录
-        - 开发板介绍
         - [Hi3516开发板介绍](quickstart-ide-standard-board-introduction-hi3516.md)
         - [RK3568开发板介绍](quickstart-ide-standard-board-introduction-rk3568.md)
 - 标准系统快速入门（安装包方式）