refactor: remove all unused imports (#9951)

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

packages/frontend/src/components/MkMediaList.vue

@@ -23,7 +23,6 @@ import XImage from '@/components/MkMediaImage.vue';
 import XVideo from '@/components/MkMediaVideo.vue';
 import * as os from '@/os';
 import { FILE_TYPE_BROWSERSAFE } from '@/const';
-import { defaultStore } from '@/store';
 
 const props = defineProps<{
 	mediaList: misskey.entities.DriveFile[];