[TASK] Remove unused label folderNotDeletedHasFiles

There are two labels 'folderNotDeletedHasFilesWithReferences'.
Those are in use, the two 'folderNotDeletedHasFiles' are not.

Resolves: #103709
Releases: main
Change-Id: I804f67b4dbcee127cf951588b43cbfd55093a45c
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/83999


Tested-by: Andreas Kienast <a.fernandez@scripting-base.de>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Andreas Kienast <a.fernandez@scripting-base.de>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: core-ci <typo3@b13.com>