code: public static base_responses delete(nitro_service client, route resources[]) throws Exception {
  		base_responses result = null;
  		if (resources != null && resources.length > 0) {
  			route deleteresources[] = new route[resources.length];
  			for (int i=0;i<resources.length;i++){
  				deleteresources[i] = new route();
  				deleteresources[i].network = resources[i].network;
  				deleteresources[i].netmask = resources[i].netmask;
  				deleteresources[i].gateway = resources[i].gateway;
  				deleteresources[i].td = resources[i].td;
  			}
  			result = delete_bulk_request(client, deleteresources);
  		}
  		return result;
  	}
docs: Use this API to delete route resources.