[llvm] [llvm-mca][AArch64] Merge Neoverse NEON tests (NFC) (PR #170881)

[Asher Dobrescu via llvm-commits]

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Asher8118 wrote:

>I've just been using the -mattr feature name so this would be inconsistent then so I think I'll just leave as is

I see, no problem then. The only reason I asked is because I thought it made it more clear which instructions were getting tested. But it's in no way a big deal.

https://github.com/llvm/llvm-project/pull/170881