Remove roadmap iframe from home page (#807)

Co-authored-by: Cursor Agent <cursoragent@cursor.com>
Co-authored-by: derick <derick@dune.com>

Author: 3 people

home.mdx

@@ -59,10 +59,6 @@ You can also level up by following the [crypto data analyst roadmap](https://roa
 
 <iframe width="560" height="315" src="https://www.youtube.com/embed/QdcQQKpTBZs?si=k-YAUtxXX44MZT8F" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
 
-<br/><br/>
-
-<iframe src="https://roadmap.sh/r/embed?id=65fee5b66deb533d6e19fb88" width="100%" height="500px" frameBorder="0"
-></iframe>
 
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