[ghc-steering-committee] Stepping down from the committee

Hello, I think it is time for me to step down from the GHC committee---lately I find that I don't have the enthusiasm I used to have for reviewing or discussing proposals, so it makes sense to make space for someone who is passionate about doing this work. Thanks for working with me, and I am looking forward to having a beer with you all at ICFP once the world reopens! -Iavor