fix lint error

packages/app/src/client/app.jsx

@@ -33,7 +33,6 @@ import PageStatusAlert from '../components/PageStatusAlert';
 import RecentCreated from '../components/RecentCreated/RecentCreated';
 import RecentlyCreatedIcon from '../components/Icons/RecentlyCreatedIcon';
 import MyDraftList from '../components/MyDraftList/MyDraftList';
-import BookmarkIcon from '../components/Icons/BookmarkIcon';
 import BookmarkList from '../components/PageList/BookmarkList';
 import LikerList from '../components/User/LikerList';
 import Fab from '../components/Fab';