[Bug]: Should upgrade to PyTorch's MultiOutputMatch

[zou3519]

Your current environment

n/a

🐛 Describe the bug

vllm/vllm/compilation/multi_output_match.py

Lines 19 to 24 in d328f78

	"""
	This class provides utilities to process multi-output matches and
	manually insert replacements.
	This is necessary because the automatic replacement for multi-output
	matches is broken: https://github.com/pytorch/pytorch/issues/137280

This should be supported in torch >= 2.6 now, so we should be able to delete the code in vLLM (or at least add a guard to only use said code in older versions of pytorch

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[zou3519]

cc @angelayi

[ProExpertProg]

In-progress in #24188