[XWIKI-5466] Remove the old rights UI - XWiki.org JIRA

Type: Task
Resolution: Fixed
Priority: Minor
Fix Version/s: 2.5 M2
Affects Version/s: 2.5 M1
Component/s: Web - Templates & Resources, {Unused} Authentication and Rights Management
Labels:
None

The old (also called "stable") rights interface was replaced by the new interface in XWiki 1.2, it is time to remove the unused code.