在目录中删除不需要体现的单板链接

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

zh-cn/device-dev/website.md

@@ -63,11 +63,6 @@
             - [编译](quick-start/quickstart-ide-standard-running-hi3516-build.md)
             - [烧录](quick-start/quickstart-ide-standard-running-hi3516-burning.md)
             - [运行](quick-start/quickstart-ide-standard-running-hi3516-running.md)
-        - Hi3751开发板
-            - [编写“Hello World”程序](quickstart-ide-standard-running-hi3751-create.md)
-            - [编译](quickstart-ide-standard-running-hi3751-build.md)
-            - [烧录](quickstart-ide-standard-running-hi3751-burning.md)
-            - [运行](quickstart-ide-standard-running-hi3751-running.md)
         - RK3568开发板
             - [编写“Hello World”程序](quick-start/quickstart-ide-standard-running-rk3568-create.md)
             - [编译](quick-start/quickstart-ide-standard-running-rk3568-build.md)
@@ -75,7 +70,6 @@
             - [运行](quick-start/quickstart-ide-standard-running-rk3568-running.md)
     - 附录
         - [Hi3516开发板介绍](quick-start/quickstart-ide-standard-board-introduction-hi3516.md)
-        - [Hi3751开发板介绍](quickstart-ide-standard-board-introduction-hi3751.md)
         - [RK3568开发板介绍](quick-start/quickstart-ide-standard-board-introduction-rk3568.md)
   - 标准系统快速入门（安装包方式）
     - [标准系统入门概述](quick-start/quickstart-standard-overview.md)
@@ -86,11 +80,6 @@
             - [编译](quick-start/quickstart-standard-running-hi3516-build.md)
             - [烧录](quick-start/quickstart-standard-running-hi3516-burning.md)
             - [运行](quick-start/quickstart-standard-running-hi3516-running.md)
-        - Hi3751开发板
-            - [编写“Hello World”程序](quickstart-standard-running-hi3751-create.md)
-            - [编译](quickstart-standard-running-hi3751-build.md)
-            - [烧录](quickstart-standard-running-hi3751-burning.md)
-            - [运行](quickstart-standard-running-hi3751-running.md)
         - RK3568开发板
             - [编写“Hello World”程序](quick-start/quickstart-standard-running-rk3568-create.md)
             - [编译](quick-start/quickstart-standard-running-rk3568-build.md)
@@ -103,7 +92,6 @@
     - 附录
         - 开发板介绍
             - [Hi3516开发板介绍](quick-start/quickstart-standard-board-introduction-hi3516.md)
-            - [Hi3751开发板介绍](quickstart-standard-board-introduction-hi3751.md)
             - [RK3568开发板介绍](quick-start/quickstart-standard-board-introduction-rk3568.md)
         - [参考信息](quickstart-standard-reference.md)
   - [获取源码](get-code/sourcecode-acquire.md)