[TASK] Remove conf.php from ext:func

Resolves: #63611
Releases: master
Change-Id: Ie51c8aef575e6a4f9178b662ceb92152af24fee5
Reviewed-on: http://review.typo3.org/35075
Tested-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>
Reviewed-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>
Reviewed-by: Markus Klein <klein.t3@reelworx.at>
Tested-by: Markus Klein <klein.t3@reelworx.at>