Remove unused imports (#12730)

packages/frontend/src/pages/ads.vue

@@ -16,8 +16,6 @@ SPDX-License-Identifier: AGPL-3.0-only
 </template>
 
 <script lang="ts" setup>
-import { computed, watch } from 'vue';
-import * as os from '@/os.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
 import { instance } from '@/instance.js';