[!!!][TASK] Remove v8->v9 upgrade wizards

Upgrade wizards created to upgrade from v8 to v9
are removed now.

Resolves: #91478
Releases: master
Change-Id: I12ecc3cf095509c7f8d5f345e6b537d125d609e2
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/64606


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>