Delete row 49 from invoices

id 49
trainer_id 2
student_id 14
invoice_no 2026-0019
category lesson
lines [{"service":"Einzelstunde am 07.10.202 ...
total_cents 7000
status draft
issued_at 2026-10-07
paid_at NULL
archived_at NULL
reminder1_at NULL
reminder2_at NULL
paid_method NULL
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