[llvm] [PseudoProbe] Fix cleanup for pseudo probe after annotation (PR #119660)

[via llvm-commits]

WenleiHe wrote:

The flag was used to avoid probe intrinsic hindering optimizations, so discriminator value etc wasn't important for that purpose. Curious what are you using this flag for?  

https://github.com/llvm/llvm-project/pull/119660