Delete row 44 from invoices

id 44
trainer_id 11
student_id 28
invoice_no 2026-0017
category quote
lines [{"service":"Schnupperkurs","w ...
total_cents 20900
status paid
issued_at 2026-10-03 11:47:31
paid_at 2026-10-03 11:48:43
archived_at NULL
reminder1_at NULL
reminder2_at NULL
paid_method NULL
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