Author: Dan Poltawski
MDL-43848 message: remove unused strings
http://git.moodle.org/gw?p=moodle.git;a=commit;h=a332d6606a8d295919a886daa915681bcb0bd2b6
http://github.com/moodle/moodle/commit/a332d6606a8d295919a886daa915681bcb0bd2b6
- 2.8 en [unreadnewnotification,core_message]
- 2.8 en [unreadnewnotifications,core_message]