Disable shipping service check if local pickup
Disable shipping service check if local pickup

Local pickup does not have a service so we should not reject local pickup orders
without a defined service.

OpenBazaar/openbazaar-go,gubatron/openbazaar-go,duomarket/openbazaar-test-nodes,gubatron/openbazaar-go,hoffmabc/openbazaar-go,hoffmabc/openbazaar-go,OpenBazaar/openbazaar-go,hoffmabc/openbazaar-go,duomarket/openbazaar-test-nodes,gubatron/openbazaar-go,duomarket/openbazaar-test-nodes,OpenBazaar/openbazaar-go