remove deprecated attribute

Author: ethanpalm

create/image-embeds.mdx

@@ -124,7 +124,6 @@ Embed YouTube videos using iframe elements:
   className="w-full aspect-video rounded-xl"
   src="https://www.youtube.com/embed/4KzFe50RQkQ"
   title="YouTube video player"
-  frameBorder="0"
   allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
   allowFullScreen
 ></iframe>
@@ -135,7 +134,6 @@ Embed YouTube videos using iframe elements:
   className="w-full aspect-video rounded-xl"
   src="https://www.youtube.com/embed/4KzFe50RQkQ"
   title="YouTube video player"
-  frameBorder="0"
   allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
   allowFullScreen
 ></iframe>