[TASK] Travis-ci: Disable apc in PHP 5.4

APC for travis-ci on cli was disabled for PHP 5.3 already because of
instability. This patch kicks out APC for PHP 5.4 as well after
recent failed travis runs in this area.

Releases: master, 6.2
Change-Id: I1182a0fcfc5f94f7f778c9f0fde5f5d8672b17ee
Reviewed-on: http://review.typo3.org/32623
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>