[llvm] [AArch64] Regenerate ldst-opt.ll checks to use update_llc_test_checks (PR #193712)

[David Green via llvm-commits]

https://github.com/davemgreen approved this pull request.

Thanks for the cleanup. LGTM

Can add NFC to the title. 

https://github.com/llvm/llvm-project/pull/193712