[llvm] [GlobalISel] convergence control tokens and intrinsics (PR #67006)

[Sameer Sahasrabuddhe via llvm-commits]

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ssahasra wrote:

This file got leftover from the previous commit. It's not necessary because the adjacent file "convergence-tokens.ll" now checks for GlobalISel too.

https://github.com/llvm/llvm-project/pull/67006