arrow

ARROW-17083: [Python] Delete created files and folders in Filesystems docstring examples (#13619)

This PR is a follow up to https://github.com/apache/arrow/pull/13416 and it deletes the files and directory created with docstring examples.

Authored-by: Alenka Frim <frim.alenka@gmail.com>
Signed-off-by: Antoine Pitrou <antoine@python.org>