Delete row 26 from invoices

id 26
trainer_id 2
student_id 4
invoice_no 2026-0005
category lesson
lines [{"service":"Schnupperkurs am 04.09.20 ...
total_cents 3900
status open
issued_at 2026-09-04 08:16:18
paid_at NULL
archived_at NULL
reminder1_at NULL
reminder2_at NULL
paid_method NULL
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