Remove legacy users #822

Job	Run time
kitchen / prepare-matrix	3s
kitchen / run-kitchen-tests (centos-stream-9)	2m 59s
kitchen / run-kitchen-tests (centos-stream-10)	2m 46s
kitchen / run-kitchen-tests (debian-12)	1m 53s
kitchen / run-kitchen-tests (fedora-40)	2m 5s
kitchen / run-kitchen-tests (ubuntu-2404)	2m 17s
kitchen / run-kitchen-tests (ubuntu-2204)	3m 18s
	15m 21s

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