[TASK] Cleanup documentation

- Remove double package tag
- Remove deprecated subpackage tag

Change-Id: I53bbfe3ec35bb8184cded933d5c4eb8a06cea169
Reviewed-on: http://review.typo3.org/32963
Reviewed-by: Tim Lochmüller <tim@fruit-lab.de>
Tested-by: Tim Lochmüller <tim@fruit-lab.de>