[BUGFIX] About module: Audio player is not used anymore

[BUGFIX] About module: Audio player is not used anymore

The about module has an link to the audio player website.
The TYPO3 core does not use this library anymore and can be removed.

Releases: master, 7.6
Resolves: #77843
Change-Id: I39ffa1cf9d103789248fbed6547956c0d873a312
Reviewed-on: https://review.typo3.org/49860
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>