[CLEANUP] Cleanup caching configuration and usage

* Remove not used and not needed class_cache
* Deprecate CacheService as it is only overhead
* Use Caching Framework directly
* Rename category cache to follow naming convention
* Remove paths from hook registration
* Remove useless require
* Remove not used hook registration (was overwritten
  with same key)
* cleanup ext_localconf.php

Change-Id: I70eaa659d067724d9bc6f281709a9ca04ee00677
Releases: 3.0
Reviewed-on: https://review.typo3.org/29551
Reviewed-by: Georg Ringer
Tested-by: Georg Ringer