Drop old TODOs
Drop old TODOs

See #113

izgzhen/hadrian,sdiehl/ghc,sdiehl/ghc,snowleopard/shaking-up-ghc,sdiehl/ghc,sdiehl/ghc,bgamari/shaking-up-ghc,sdiehl/ghc,sdiehl/ghc,snowleopard/hadrian,sdiehl/ghc