Remove unused imports (#12730)

packages/frontend/src/pages/settings/2fa.vue

@@ -72,7 +72,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 </template>
 
 <script lang="ts" setup>
-import { ref, defineAsyncComponent, computed } from 'vue';
+import { defineAsyncComponent, computed } from 'vue';
 import { supported as webAuthnSupported, create as webAuthnCreate, parseCreationOptionsFromJSON } from '@github/webauthn-json/browser-ponyfill';
 import MkButton from '@/components/MkButton.vue';
 import MkInfo from '@/components/MkInfo.vue';