[llvm] [PredicateInfo] Reformat PT_Switch's annotation as valid comments (PR #165249)

[Nikita Popov via llvm-commits]

https://github.com/nikic commented:

Hm, I'm not sure it really makes sense to print the full switch here in the first place. Can we just drop this? The printed edge already identifies this uniquely.

https://github.com/llvm/llvm-project/pull/165249