Delete row 31 from invoices

id 31
trainer_id 11
student_id 10
invoice_no 2026-0015
category lesson
lines [{"service":"Einzelstunde","se ...
total_cents 5000
status open
issued_at 2026-09-08 08:06:26
paid_at NULL
archived_at NULL
reminder1_at NULL
reminder2_at NULL
paid_method NULL
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