[TASK] Remove BE/TSconfigConditions setting

Did you know there is an option to disable condition parsing in
TS config? It is removed with the patch.

Change-Id: If6ce720a4416af80b7deb293160e8b712c04ff0d
Resolves: #52013
Releases: 6.2
Reviewed-on: https://review.typo3.org/23838
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn