[llvm] [Analysis][test] Remove unsafe-fp-math uses (NFC) (PR #164605)

[via llvm-commits]

paperchalice wrote:

> It would be better to delete these attributes entirely. At least from a cursory look, none of them actually look relevant. Someone just copy&pasted clang output without proper reduction.

There are still 800+ tests use it, this might make code review difficult. Although most of them are generated by find+replace.

https://github.com/llvm/llvm-project/pull/164605