Should we bother generating eliminators with predicates of kind (<Datatype> -> Type)?

[RyanGlScott]

Currently, I generate eliminators with predicates of two different kinds, <Datatype> -> Type and <Datatype> ~> Type, and I also have a story for eliminators that are polymorphic over the arrow kind used. However, I'm questioning whether all of this is worth it, since:

• 99% of the type, I use the (~>) variants anyway
• Predicates of kind <Datatype> -> Type can be turned into ones of kind <Datatype> ~> Type without too much trouble (using the genDefunSymbols function from singletons)
• The arrow-polymorphic approach doesn't even work for all datatypes (e.g., GADTs)

Perhaps we should only generate eliminators of kind <Datatype> ~> Type.

[RyanGlScott]

I've decided to just go with predicates using ~> from now on. Implemented in 1f6e9302db627931173122049cc85e8b00c1813b.