By Kate Holton LONDON (Reuters) -British Airways owner IAG has experienced surface degradation on Airbus A350 jets but not to the same extent as Qatar Airways and it will not affect planned deliveries, its CEO said. Qatar and Airbus have been at loggerheads for months, with both sides turning to the courts to settle a very public dispute after Qatar grounded 22 A350 jets over erosion to their painted surface and lightning protection. Airbus says the issues are no reason to ground the planes. IAG Chief Executive Luis Gallego told Reuters that operators were having some surface degradation issue…