🔖chore: Remove semantic-ui styles

Signed-off-by: Apple\Apple <zeraturing@foxmail.com>

web/src/index.js

@@ -1,18 +1,11 @@
-import './index.css';
 import React from 'react';
 import ReactDOM from 'react-dom/client';
 import { BrowserRouter } from 'react-router-dom';
-import App from './App';
-import HeaderBar from './components/HeaderBar';
-import 'semantic-ui-offline/semantic.min.css';
 import { UserProvider } from './context/User';
-import { ToastContainer } from 'react-toastify';
 import 'react-toastify/dist/ReactToastify.css';
 import { StatusProvider } from './context/Status';
 import { Layout } from '@douyinfe/semi-ui';
-import SiderBar from './components/SiderBar';
 import { ThemeProvider } from './context/Theme';
-import FooterBar from './components/Footer';
 import { StyleProvider } from './context/Style/index.js';
 import PageLayout from './components/PageLayout.js';
 import './i18n/i18n.js';