[FOLLOWUP][TASK] Remove leftover unzipping core functionality

Remove unzipFile permission from BackendUserAuthenticationTest.

Resolves: #72611
Related: #72602
Releases: master
Change-Id: Ieb9d13f95404875ce68170ef721bc37619619ec0
Reviewed-on: https://review.typo3.org/45740


Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>