Delete row 47 from invoices

id 47
trainer_id 2
student_id 30
invoice_no 2026-0017
category lesson
lines [{"service":"Einzelstunde am 09.10.202 ...
total_cents 7000
status draft
issued_at 2026-10-09
paid_at NULL
archived_at NULL
reminder1_at NULL
reminder2_at NULL
paid_method NULL
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