[ProfCheck] Disable X86 AMX Test Case
4776451693f4a6bd18e50106edb4b3cfa766484f broke this because it started
running an existing pass using the NewPM, which caused ProfCheck to
catch existing issues. Disable it for now because we have not started
looking at anything in the Codegen pipeline. This pass is also only
enabled at O0 or if a function has optnone, so not super critical.
