Andreas Fernandez authored Nov 18, 2018 and Benni Mack committed Nov 19, 2018

The class GroupElement defines a `fieldChangeFunc` which is unused in
this context. Since this never caused an issue, it's assumed to be save
to remove the change handler.

This allows further cleanup in the FormEngine JavaScript land, e.g.
deprecating `setFormValueManipulate()`.

Resolves: #86948
Releases: master
Change-Id: I51f8c0c6bf3cd383ba2e12e29f329ceb979a9799
Reviewed-on: https://review.typo3.org/58910

Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>