Remove useless variable DEMO_BAG_URL
Remove useless variable DEMO_BAG_URL

Signed-off-by: Peter Han <710af05a36118742188479fc131e11bbb07be9aa@gmail.com>

jinghaomiao/apollo,xiaoxq/apollo,xiaoxq/apollo,xiaoxq/apollo,ycool/apollo,jinghaomiao/apollo,wanglei828/apollo,ApolloAuto/apollo,xiaoxq/apollo,wanglei828/apollo,wanglei828/apollo,ApolloAuto/apollo,jinghaomiao/apollo,ycool/apollo,ApolloAuto/apollo,ApolloAuto/apollo,ycool/apollo,xiaoxq/apollo,ApolloAuto/apollo,wanglei828/apollo,jinghaomiao/apollo,jinghaomiao/apollo,ApolloAuto/apollo,ycool/apollo,ycool/apollo,jinghaomiao/apollo,ycool/apollo,xiaoxq/apollo,wanglei828/apollo,wanglei828/apollo