Forum final deprecations to 2.8

git grep for each of the following and confirm that they aren't in any live code (The shell script find_deprecated.sh might help): + - forum_count_unrated_posts + - forum_tp_count_discussion_read_records + - forum_get_user_discussions + - forum_tp_count_forum_posts + - forum_tp_count_forum_read_records + - forum_get_open_modes + - forum_get_child_posts + - forum_get_discussion_posts + - forum_get_ratings + - forum_get_tracking_link + - forum_tp_count_discussion_unread_posts + - forum_convert_to_roles + - forum_tp_get_read_records + - forum_tp_get_discussion_read_records + - forum_user_enrolled + - forum_user_can_view_post + - forum_shorten_post + - forum_is_subscribed + - forum_subscribe + - forum_unsubscribe + - forum_subscribed_users + - forum_is_forcesubscribed + - forum_forcesubscribe + - forum_get_forcesubscribed + - forum_get_subscribed_forums + - forum_get_optional_subscribed_forums + - forum_get_potential_subscribers Run PHPUnit for mod_forum vendor/bin/phpunit --testsuite mod_forum_testsuite Confirm that there are no errors nor failures.