[TASK] Simplify ImageCropUpdater

The ImageCropUpdater of the install tool does not need the
not-yet-migrated TCA it does not rely on any TCA that may
have changed. Remove that section from the code.

Change-Id: I8ed4190fd53d87f368c978b183b99b562dba9444
Resolves: #79951
Releases: master
Reviewed-on: https://review.typo3.org/51792


Reviewed-by: Helmut Hummel <typo3@helhum.io>
Tested-by: Helmut Hummel <typo3@helhum.io>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Mona Muzaffar <mona.muzaffar@gmx.de>
Tested-by: Mona Muzaffar <mona.muzaffar@gmx.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>