Revert accidental change to collectTyAndValBinders
Revert accidental change to collectTyAndValBinders

Richard accidetally introduced this change in his big kind-equality
patch.  The code is wrong, and potentially could cause binders to
be re-ordered.

Worth merging to 8.0.

(cherry picked from commit da260a5bddf990959f639a3551b335ee26c766f6)

GaloisInc/halvm-ghc,GaloisInc/halvm-ghc,GaloisInc/halvm-ghc,GaloisInc/halvm-ghc,GaloisInc/halvm-ghc,GaloisInc/halvm-ghc,GaloisInc/halvm-ghc