refactor(org-agenda): drop OVERDUE block, lead with the schedule

The daily F8 agenda opened with an OVERDUE block that re-listed every past-due scheduled or deadline task. Those items already show in the SCHEDULE block on today's line, since org-scheduled-past-days and org-deadline-past-days are both 10000. The OVERDUE section was pure duplication.

I removed it and moved SCHEDULE to the top so the calendar leads the view. The now-dead cj/org-agenda-skip-subtree-if-not-overdue helper, its header defvar, and the nine tests covering it are gone too.

0 files changed, 0 insertions, 0 deletions