bpo-33744: Fix test_uu. (GH-7350) (GH-7352)

Separate tests leaked files or were depended on files leaked in other tests.
(cherry picked from commit 027f95c736457f12c5713d9cf5b95ac335e583df)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
1 file changed