`whiten_rewards` parameter in RLOO config is not used.

[velezbeltran]

Reproduction

Hello!

I think there is a small bug. I was trying to find out what the difference was between the whiten_rewards and normalize_rewards parameter in the RLOOConfig object and after inspecting the code for the RLOOTrainer class I found that it is not used. Hence, I think it should probably be removed.

Thank you for your help and the codebase! It is super helpful.

System Info

I can see this in the codebase.

Checklist

• I have checked that my issue isn't already filed (see open issues)
• I have included my system information
• Any code provided is minimal, complete, and reproducible (more on MREs)
• Any code provided is properly formatted in code blocks, (no screenshot, more on code blocks)
• Any traceback provided is complete

[qgallouedec]

Fixed in #3801