[CLEANUP] Clean up functional tests

To allow running of all functional tests, instead of
relying on travis.yml, we want to clean up broken and
abandoned tests.

So we remove the tests that fatal because they are not
meant to be used in the functional testing framework.

Resolves: #58445
Releases: 6.2
Change-Id: I8fd021a9814dec43f71200641c9ba1ebbc0e32d0
Reviewed-on: https://review.typo3.org/29848
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring
Reviewed-by: Jan Helke
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn