[TRITON_KERNELS] simplify global scaling #10722

Job	Run time
pre-commit / pre-commit (code formatting)	52s
runner-preparation / prepare	3s
build-macos / Build MacOS (macos-latest)	3m 48s
integration-tests-nvidia / integration-tests-nvidia (nvidia-h100)	24m 3s
integration-tests-nvidia / integration-tests-nvidia (nvidia-a100)	18m 36s
integration-tests-amd / integration-tests-amd (amd-gfx942)	13m 3s
integration-tests-amd / integration-tests-amd (amd-gfx950)	11m 42s
integration-tests-amd / integration-tests-amd (self-hosted, gfx90a)	12m 16s
integration-tests-nvidia / integration-tests-nvidia (nvidia-gb200)	27m 44s
	1h 52m 7s

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