scripts regression tests

remove unused variable isPresent #478

# to view logs

Run time

Learn about OS # on GitHub Actions

Job	Run time
build (3.8)	18m 58s
build (3.8)	17m 58s
build (3.8)	17m 58s
build (3.8)	17m 58s
build (3.8)	17m 58s
build (3.11)	16m 59s
build (3.11)	16m 59s
build (3.11)	17m 28s
build (3.11)	17m 28s
build (3.11)	17m 28s
build (3.x)	17m 25s
build (3.x)	17m 25s
build (3.x)	17m 25s
build (3.x)	18m 1s
build (3.x)	22m 12s
	4h 29m 40s