[llvm] [Hexagon] Clean-up Instrprof test (PR #166990)

[Ikhlas Ajbar via llvm-commits]

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@@ -15,6 +15,3 @@ entry:
 
 ; Function Attrs: inaccessiblememonly nofree nosync nounwind willreturn
 declare void @llvm.hexagon.instrprof.custom(ptr, i32) #1
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iajbar wrote:

Remove "#1"

https://github.com/llvm/llvm-project/pull/166990