Author: David Mudrak
Removing legacy hidden role assignment strings
http://git.moodle.org/gw?p=moodle.git;a=commit;h=3b8b116ec30ee91d1da760b91cfc933f5928e481
http://github.com/moodle/moodle/commit/3b8b116ec30ee91d1da760b91cfc933f5928e481
- 2.0 en [createhiddenassign,core_role]
- 2.0 en [role:viewhiddenassigns,core_role]
- 2.0 en [userhashiddenassignments,core_role]