Delete row 15 from matchdays

id 15
competition_id 1
number 15
status pending
first_match_at 2025-12-05T18:00:00.000Z
last_match_at 2025-12-07T19:45:00.000Z
sync_at 2025-12-03T09:00:00.000Z
draft_open_at 2025-12-04T19:00:00.000Z
draft_close_at 2025-12-05T15:00:00.000Z
scoring_at 2025-12-07T23:45:00.000Z
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