[!!!][TASK] Remove deprecated Extbase Domain Models / Repositories / Converters

The following classes are removed:

- TYPO3\CMS\Extbase\Domain\Model\AbstractFileCollection
- TYPO3\CMS\Extbase\Domain\Model\FileMount
- TYPO3\CMS\Extbase\Domain\Model\FolderBasedFileCollection
- TYPO3\CMS\Extbase\Domain\Model\StaticFileCollection
- TYPO3\CMS\Extbase\Domain\Repository\FileMountRepository
- TYPO3\CMS\Extbase\Property\TypeConverter\AbstractFileCollectionConverter
- TYPO3\CMS\Extbase\Property\TypeConverter\FolderBasedFileCollectionConverter
- TYPO3\CMS\Extbase\Property\TypeConverter\StaticFileCollectionConverter

Resolves: #91538
Related: #91473
Releases: master
Change-Id: I713ab5cd0dc28d6ec2bbbd33cb528e40f3b7ff3f
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/64607


Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>