Author: Zig Tan
MDL-61881 report_competency: Implement null privacy provider
http://git.moodle.org/gw?p=moodle.git;a=commit;h=a2881f0511b84e92bb7488aa1ba6268d3c66da44
http://github.com/moodle/moodle/commit/a2881f0511b84e92bb7488aa1ba6268d3c66da44
+ 3.3 en [privacy:metadata,report_competency]