[!!!][TASK] Remove alternateBgColors option

Resolves: #53658
Releases: master
Change-Id: If36c17741d8f3a9a07f7cc8ad2f3289164b8b195
Reviewed-on: http://review.typo3.org/33831
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Stefan Froemken <froemken@gmail.com>
Tested-by: Stefan Froemken <froemken@gmail.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>