Revert "[BUGFIX] Native DateTime values cannot be mapped from storage"

This reverts commit c21dc476bd18280f3d2985a48c2ce16bd09f3576

Change-Id: Idff5c59665839caf49c3df8115bf48c136380d40
Reviewed-on: https://review.typo3.org/19449
Reviewed-by: Oliver Hader
Tested-by: Oliver Hader