Recurrence 2 lookup certificate: A2 source bound

This is a checked coefficient-lookup shard for the second pseudo-division recurrence in the order-seven certificate.

theorem MazurTorsion.Kubert.OrderSevenBacktrackingCertificate.Internal.ResultantCertificate.recurrence2A2_coeff_high (n : ℕ) (h : 110 < n) : Polynomial.coeff remainder2Coefficient2 n = 0

theorem MazurTorsion.Kubert.OrderSevenBacktrackingCertificate.Internal.ResultantCertificate.recurrence2A2_natDegree_le : Polynomial.natDegree remainder2Coefficient2 ≤ 110