remove dead link

Signed-off-by: tcaldwell-x <tcaldwell@twitter.com>

Author: tcaldwell-x

overview.mdx

@@ -96,9 +96,6 @@ Earn free [xAI API](https://docs.x.ai) credits when you purchase X API credits 
   <Card title="X Ads API" icon="rectangle-ad" href="/x-ads-api/introduction">
     Programmatically manage ad campaigns, targeting, creatives, and analytics.
   </Card>
-  <Card title="X for Websites" icon="laptop-code" href="/x-for-websites/x-for-websites">
-    Embed posts, timelines, and follow buttons on your website.
-  </Card>
 </CardGroup>