update zh-cn/application-dev/reference/arkui-ts/ts-media-components-video.md.

删除未使用变量   @State startStaus
Signed-off-by: stefan666<qbfan@isoftstone.com>

zh-cn/application-dev/reference/arkui-ts/ts-media-components-video.md

@@ -166,7 +166,6 @@ struct VideoCreateComponent {
   @State autoPlays: boolean = false;
   @State controlsss: boolean = true;
   controller: VideoController = new VideoController();
-  @State startStaus: boolean = true;
   build() {
     Column() {
       Video({