Delete row 21 from matchdays

id 21
competition_id 1
number 21
status pending
first_match_at 2026-02-06T19:45:00.000Z
last_match_at 2026-02-08T19:45:00.000Z
sync_at 2026-02-04T09:00:00.000Z
draft_open_at 2026-02-05T19:00:00.000Z
draft_close_at 2026-02-06T16:45:00.000Z
scoring_at 2026-02-08T23:45:00.000Z
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