[llvm] [AMDGPU] Remove dead pass: AMDGPUMachineCFGStructurizer (PR #105645)

[Jay Foad via llvm-commits]

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@@ -8776,75 +8776,6 @@ bool SIInstrInfo::isNonUniformBranchInstr(MachineInstr &Branch) const {
   return Branch.getOpcode() == AMDGPU::SI_NON_UNIFORM_BRCOND_PSEUDO;
 }
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jayfoad wrote:

This function `isNonUniformBranchInstr` is also unused now.

https://github.com/llvm/llvm-project/pull/105645