更新lives/index.yml

lives/index.yml

 banner: 
-  mobile_url: 'https://codechina.csdn.net/codechina/operation-work/uploads/700cd15fa181e0582638135e4c1954b3/banner.jpg'
+  mobile_url: ''
   pc_url: 'https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=1959833875,2271371593&fm=26&gp=0.jpg'
   link: 'https://codechina.csdn.net/'
 # 日期时间戳标志