[llvm] [AArch64] Remove trailing whitespace in IntrinsicsAArch64.td (NFC) (PR #164267)

[Benjamin Maxwell via llvm-commits]

MacDue wrote:

I have my editor set to remove trailing whitespace (which I generally like), but this file annoys me every time I touch it :sweat_smile: 

https://github.com/llvm/llvm-project/pull/164267