Ok, that is fair. The route was tagged as a shuttle_train from Folkstone to Calais with no other information but only contained the railway loop on UK side. Futhermore, the loop wasn't complete with ways missing. The reason for deleting instead of repairing is that the Folkstone to Calais shuttle_train route is mapped with more details in relation 9967804 (along with the reverse direction in relation 9967801). I'll happily revert the change if this isn't considered enough to delete the route.