[TASK] Remove conf.php from ext:taskcenter

Resolves: #63584
Releases: master
Change-Id: I7da0dd37e275a7d2c42771f20e22f765ab0428c7
Reviewed-on: http://review.typo3.org/35061
Reviewed-by: Markus Klein <klein.t3@reelworx.at>
Tested-by: Markus Klein <klein.t3@reelworx.at>
Reviewed-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>
Tested-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>