remove unnecessary imports

packages/app/src/pages/[[...path]].page.tsx

@@ -17,9 +17,7 @@ import { serverSideTranslations } from 'next-i18next/serverSideTranslations';
 import dynamic from 'next/dynamic';
 import Head from 'next/head';
 import { useRouter } from 'next/router';
-import { renderToString } from 'react-dom/server';
 import superjson from 'superjson';
-import * as toastr from 'toastr';
 
 import { useCurrentGrowiLayoutFluidClassName } from '~/client/services/layout';
 import { Comments } from '~/components/Comments';