[TASK] Remove markTestIncomplete() functional tests

There are a couple of functional tests marked
"incomplete" since 2019. Tests that have been
skipped for so long are probably broken anyway
and do not add value. Remove them.

Resolves: #96839
Releases: main, 11.5
Change-Id: I503339d9a4b30a32b7d1a1fbc1bd9832fe289952
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/73434


Tested-by: core-ci <typo3@b13.com>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>