use new backend

src/App.js

@@ -3,20 +3,10 @@ import {Flow} from './Flows';
 import {Title} from './Title';
 import {Sidebar} from './Sidebar';
 import {PressureHelper} from './PressureHelper';
-import {TokenCtx,ISOP_APPKEY} from './UserAction';
+import {TokenCtx} from './UserAction';
 import {load_config,bgimg_style} from './Config';
 
 function DeprecatedAlert(props) {
-    if(document.domain==='hole.xmcp.ml')
-        return (
-            <div className="flow-item">
-                <div className="box box-tip">
-                    <p><b>请使用新域名访问P大树洞！</b></p>
-                    <p><a href="http://pkuhelper.pku.edu.cn/hole/">pkuhelper.pku.edu.cn/hole</a></p>
-                    <p>当前域名将停止支持</p>
-                </div>
-            </div>
-        );
     return null;
 }