[llvm] [DebugInfo][RemoveDIs] Remove debug-intrinsic printing cmdline options (PR #131855)

[Jeremy Morse via llvm-commits]

jmorse wrote:

For the public announcement, does https://discourse.llvm.org/t/psa-ir-output-changing-from-debug-intrinsics-to-debug-records/79578/3 qualify -- I think we've telegraphed fairly widely that intrinsics will go away, but there's only so much engagement we'll get. IMO after this patch lands we should quickly move to delete the "experimental-debuginfo-iterators" flag and request that someone reverts it if it's a blocker to them, that'll flush out anyone who still depends on intrinsics and will start a discussion on what's next. (Or: it'll reveal that no-one depends on it, and we can move further).

https://github.com/llvm/llvm-project/pull/131855