Manually fix or remove runtime tests with `fun`, `class_meth`, or `inst_meth`
Summary:
`fun`, `class_meth`, and `inst_meth` ought to be properly ripped out of Hack. The steps here are roughly:
1. Codemod away the syntax from tests (we are here)
2. Default the options for disabling these at the parser level to `on`
3. Rip out the typechecker & compiler support
4. Relax the parser rules in (2)
This diff manually handles `fun`, `class_meth`, and some `inst_meth` tests. Any that are no longer relevant (e.g.: testing syntactic forms that are impossible under function pointers) are just removed.
Reviewed By: periodic1236
Differential Revision:
D42255399
fbshipit-source-id:
87843f35113dc89a00080c1d2c72f9b730abff25