Run phpunit and behat Attempt colourful git greps for each of the removed functions: function forum_count_unrated_posts($discussionid, $userid) { function forum_tp_count_discussion_read_records($userid, $discussionid) { function forum_get_user_discussions($courseid, $userid, $groupid=0) { function forum_tp_count_forum_posts($forumid, $groupid=false) { function forum_tp_count_forum_read_records($userid, $forumid, $groupid=false) { function forum_get_open_modes() { function forum_get_child_posts($parent, $forumid) { function forum_get_discussion_posts($discussion, $sort, $forumid) { function forum_get_ratings($context, $postid, $sort = "u.firstname ASC") { function forum_get_tracking_link($forum, $messages=array(), $fakelink=true) { function forum_tp_count_discussion_unread_posts($userid, $discussionid) { function forum_convert_to_roles() { function forum_tp_get_read_records($userid=-1, $postid=-1, $discussionid=-1, $forumid=-1) { function forum_tp_get_discussion_read_records($userid, $discussionid) { function forum_user_enrolled($cp) { function forum_user_can_view_post($post, $course, $cm, $forum, $discussion, $user=null){ function forum_shorten_post($message) {