[TASK] Deprecate TypeHandlingUtility::hex2bin

Method \TYPO3\CMS\Extbase\Utility\TypeHandlingUtility::hex2bin
has been deprecated. As of PHP 5.4, a native function hex2bin
exists, which should be used instead.

Releases: master
Resolves: #87613
Change-Id: I19cfade0584762148a611713412889bec4895200
Reviewed-on: https://review.typo3.org/c/59603


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Susanne Moog <susanne.moog@typo3.org>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Susanne Moog <susanne.moog@typo3.org>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>