[TASK] Drop TCA ctrl typeicons

The typeicons key in TCA ctrl section was deprecated for a
long time already and marked as "use typeicon_classes" instead
within the documentation.

The patch drops last usages in core TCA - they all overlap with
typeicon_classes already and drop the handling.

Resolves: #69699
Releases: master
Change-Id: I5ae986d0238f2eb561dcd35b32ea41f455271854
Reviewed-on: http://review.typo3.org/43196


Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Frank Nägler <frank.naegler@typo3.org>
Tested-by: Frank Nägler <frank.naegler@typo3.org>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>