refactor: remove unused import

apps/docs/pages/guides/auth/server-side-rendering.mdx

@@ -1,6 +1,5 @@
 import Layout from '~/layouts/DefaultGuideLayout'
 import { Accordion } from 'ui'
-import ReactMarkdown from 'react-markdown'
 
 export const meta = {
   id: 'server-side-rendering',