feat: 删除顶部切换主题按钮

src/views/Layout/src/components/Header/HeaderView.vue

@@ -118,7 +118,6 @@ const handleLogin = () => {
   <div class="layout-toolbar">
     <VBreadcrumb></VBreadcrumb>
     <div class="right-info">
-      <el-button @click="$toggleDarkMode">切换主题</el-button>
       <el-input
         v-model="searchValue"
         size="large"