Optimization: remove unnecessary `liftEffect`s throughout codebase

[JordanMartinez]

I'm pretty sure the liftEffect here is redundant.

pure $ unsafePerformEffect $ liftEffect $ Ref.modify_ fn stateRef

unsafePerformEffect takes an Effect as its argument and Ref.modify_ already returns an Effect, so I'm not sure why liftEffect is there. I imagine it was from when Thomas was originally working on this code and exploring different design approaches.

[thomashoneyman]

Yes, this isn't necessary. I'm happy to accept a PR which removes these uses of liftEffect.