Author: Mark Nelson
MDL-40063 mod_quiz: replaced 'delete attempt' add_to_log call with an event
http://git.moodle.org/gw?p=moodle.git;a=commit;h=7dad3d95fda3ab849651c001f05d008627c2f8b5
http://github.com/moodle/moodle/commit/7dad3d95fda3ab849651c001f05d008627c2f8b5
+ 2.7 en [eventattemptdeleted,mod_quiz]