docs: Remove backward compatibility note for custom modes gallery link

Author: hannesrudolph

docs/features/custom-modes.md

@@ -368,7 +368,3 @@ Roo will generate the appropriate pattern with proper escaping for JSON configur
 
 ## Community Gallery
 Ready to explore more? Check out the [Custom Modes Gallery](/community/#custom-modes-gallery) section on the main community page to discover and share custom modes created by the community!
-
-:::note
-Links to the previous location at `/community#custom-modes-gallery` will continue to work for backward compatibility.
-:::