[llvm] Remove an incorrect assert in MFMASmallGemmSingleWaveOpt. (PR #130131)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,93 @@
+; RUN: llc -mtriple=amdgcn -mcpu=gfx90a -O1 -global-isel=true < %s
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arsenm wrote:

Can you reproduce without globalisel? The output is going to be less consistent in the output for a downstream issue.

Also should generate checks, or something. Avoid tests with no checks 

https://github.com/llvm/llvm-project/pull/130131