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

[Matt Arsenault via llvm-commits]

================
@@ -0,0 +1,43 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc -mtriple=amdgcn -mcpu=gfx90a -O1 < %s | FileCheck -check-prefix=GCN %s
----------------
arsenm wrote:

```suggestion
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90a -O1 < %s | FileCheck -check-prefix=GCN %s
```

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