[clang] [llvm] Remove llvm/MC/MCAsmLayout.h and the unused parameter in MCAssembler::layout (PR #97449)

[Shubham Sandeep Rastogi via cfe-commits]

rastogishubham wrote:

I agree with @dcci I appreciate all the work, but I noticed 10 patches in MC that broke a bunch of stuff for fine-grained caching downstream in apple/llvm-project so the assumption that these changes are straightforward is incorrect. 

https://github.com/llvm/llvm-project/pull/97449