remove unused import #507

Job	Run time
call / tests (windows-latest, tests)	2m 5s
call / tests (macos-latest, tests)	1m 9s
call / checks (ubuntu-latest, 3.10)	1m 39s
call / validate (ubuntu-latest, 3.12, validate)	2m 53s
call / checks (ubuntu-latest, 3.13)	1m 45s
call / checks (ubuntu-24.04, 3.11)	1m 33s
	11m 4s

Provide feedback