Delete row 55 from invoices

id 55
trainer_id 11
student_id 29
invoice_no 2026-0020
category lesson
lines [{"service":"Einzelstunde am 17.10.202 ...
total_cents 5000
status paid
issued_at 2026-10-17
paid_at 2026-10-13 13:48:39
archived_at NULL
reminder1_at NULL
reminder2_at NULL
paid_method bar
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