Update README.md

Author: mackoj

README.md

@@ -14,7 +14,6 @@ The goal of this is to show how easy it is to build a plugin.
 
 ## TODO
 
-- [ ] use [libjxl](https://github.com/libjxl/libjxl) instead of [JXLCoder]([url](https://github.com/awxkee/jxl-coder-swift.git)).
 - [ ] make the API ready for Swift 6 and async/throwing functions
 - [ ] create a tests suite
 - [ ] add documentations