Remove outdated comment on 'max rank' #280

Job	Run time
array-api-tests-numpy-latest / tests (3.12)	2m 37s
array-api-tests-numpy-latest / tests (3.11)	2m 18s
array-api-tests-numpy-latest / tests (3.9)	2m 53s
array-api-tests-numpy-latest / tests (3.10)	2m 53s
	10m 41s

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