[llvm] [llvm-exegesis] Fix host CPU dependency in snippet-generator-seed test (PR #217824)

[Aiden Grossman via llvm-commits]

https://github.com/boomanaiden154 commented:

Where exactly are you running into this? This test has passed for the past ~year on my znver3 workstation.

It's also unclear to me why we would ever be seeing a difference. From my understanding of snippet generation, it can differ between CPUs, but for opcodes where all the instructions in the snippet are going to be from the base ISA, I don't think we should be generating different snippets.

https://github.com/llvm/llvm-project/pull/217824