[TASK] Remove unnecessary closing php tag in viewhelpers

Change-Id: Iff2ec669fe580c31c7a2ef1e56a063db48278062
Reviewed-on: http://review.typo3.org/32572
Reviewed-by: Armin Ruediger Vieweg <armin@v.ieweg.de>
Tested-by: Armin Ruediger Vieweg <armin@v.ieweg.de>