[lld] [ELF] Remove tryCreateFile probe for -o/-Map/--why-extract (PR #222831)

[James Henderson via llvm-commits]

https://github.com/jh7370 commented:

I'm no longer involved with the linker in our team, so I don't feel like I can speak for them: I've added my colleagues who are still involved with the linker as reviewers.

I think the motivation for early exiting is still valid though? Links can be on the order of tens of minutes for particularly big ones and it would be dumb to have to do the majority of the work for this when there's a misspelt file path or similar for an auxiliary option, when it can be detected upfront.

https://github.com/llvm/llvm-project/pull/222831