Remove erroneous comments about duplicates [skip ci] #19258

Job	Run time
build_make (ubuntu:25.10)	3m 30s
build_make (ubuntu:24.04)	3m 1s
build_make (alpine:3.23)	6m 9s
build_cmake (ubuntu:24.04, true, true)	2m 49s
build_cmake (alpine:3.23, false, false)	4m 40s
build_cmake (ubuntu:25.10, true, true)	2m 40s
	22m 49s

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