MOVED: add removed port, cleanup
While here, cleanup using Tools/scripts/MOVEDlint.awk:
- audio/kid3: No qt5/kf5 flavor anymore, stop recommending it.
- databases/mariadb{103,106}-{client,server}: both non-existent.
Fixes: 813dcb3 ("www/py-flask-limiter3: Remove port")
Reported by: joneum (via e-mail)
Approved by: osa, vvd (Mentors, implicit)