Raise compile error when using unimplemented functions

The path functions in this patch are unimplemented (as per the TODO comment from upstream). To avoid running into a linker error (missing symbol), this patch raises a compile error by commenting out the functions, which is more user friendly.

Differential Revision: https://reviews.llvm.org/D111892

GitOrigin-RevId: 6b82adbb4980593f4661edf94e5539adfe1a9f4e
1 file changed