ARROW-17083: [Python] Delete created files and folders in Filesystems docstring examples (#13619)
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 <f50e75d4c31e511ffacbf2da8f53d7ed4bd8eabe@gmail.com>
Signed-off-by: Antoine Pitrou <9359a4d812173b65a3a0094cd86363e79731a3c2@python.org>
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