refactor: remove all unused imports (#9951)

Co-authored-by: tamaina <tamaina@hotmail.co.jp>

packages/frontend/src/pages/admin/overview.queue.vue

@@ -33,9 +33,7 @@
 import { markRaw, onMounted, onUnmounted, ref } from 'vue';
 import XChart from './overview.queue.chart.vue';
 import number from '@/filters/number';
-import * as os from '@/os';
 import { stream } from '@/stream';
-import { i18n } from '@/i18n';
 
 const connection = markRaw(stream.useChannel('queueStats'));