rpc: update for tx->txdb change.
rpc: update for tx->txdb change.

VidaID/bcoin,VidaID/bcoin,decentraland/decentraland-node,decentraland/decentraland-node,decentraland/bronzeage-node,decentraland/bronzeage-node,decentraland/bronzeage-node,VidaID/bcoin,decentraland/decentraland-node