Drop incorrect changelog entry

Author: Shnatsel

CHANGES.md

@@ -20,7 +20,6 @@ Features:
 Bug fixes:
  - Fixed some APNG images being decoded incorrectly
  - Fixed the iterator over animated WebP frames to return `None` instead of an error when the end of the animation is reached
- - Toggling the `rayon` feature now correctly toggles the use of `rayon` within `ravif` (AVIF encoder). Previously it would be either always on or always off, depending on the `ravif` version.
 
 ### Version 0.25.2