[clang] [Clang] remove qualifiers in getCanonicalTypeUnqualified (PR #170271)

[Aaron Ballman via cfe-commits]

AaronBallman wrote:

> @AaronBallman right, it's a conformance fix to a recently added built-in. I would hope no one relies on the old behavior nor should we keep the old behavior around.

Thanks for confirmation! Then I think we should move forward with these changes and just keep an eye on the issues list in case users report a disruption. We can add the ABI check before the release if we need to.

https://github.com/llvm/llvm-project/pull/170271