[llvm] [AMDGPU]: Packed instructions unpacking to co-issue post-RA scheduling - minor fixes (PR #160195)

[Matt Arsenault via llvm-commits]

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@@ -1,4 +1,3 @@
-# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
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arsenm wrote:

This shouldn't regress to non-generated tests 

https://github.com/llvm/llvm-project/pull/160195