[TASK] Remove old PHP version leftovers

Releases: master
Resolves: #64670
Change-Id: Ia54cb96e20cd0392bd43cec366b3d8b9ab0a02df
Reviewed-on: http://review.typo3.org/35940


Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Jan Helke <typo3@helke.de>
Tested-by: Jan Helke <typo3@helke.de>
Reviewed-by: Steffen Müller <typo3@t3node.com>
Tested-by: Steffen Müller <typo3@t3node.com>