Union is unused

[srghma]

can we remove

https://github.com/purescript-codegen/purescript-ps-ast/blob/bcc843d867c8328ee9cd16d735f8e91133d15c2d/src/Language/PS/AST/Types.purs#L146-L163

?

[paluh]

Yeah. .Thanks for pointing that out. This lib was literally copied from mui and I was not able to clean it up :-)