style(SidebarItem.vue): 移除无用引用和多余空行

src/layout/components/Sidebar/SidebarItem.vue

@@ -31,13 +31,11 @@
   </div>
 </template>
 
-
 <script setup lang="ts">
 import path from 'path-browserify'
 import { ref} from "vue";
 import {isExternal} from '@/utils/validate'
 import AppLink from './Link.vue'
-import {RouteRecordRaw} from "vue-router";
 
 import { generateTitle } from '@/utils/i18n'
 import SvgIcon from '@/components/SvgIcon/index.vue';