bankd: Actually send the RemoveMappingRes we prepare

Change-Id: I01d1216ab9461a7e3c51c55a1ab33229bd920da7

src/bankd_main.c

@@ -189,6 +189,7 @@ static int bankd_srvc_handle_rx(struct rspro_server_conn *srvc, const RsproPDU_t
 				resp = rspro_gen_RemoveMappingRes(ResultCode_ok);
 			}
 		}
+		server_conn_send_rspro(srvc, resp);
 		break;
 	default:
 		fprintf(stderr, "Unknown/Unsupported RSPRO PDU type: %u\n", pdu->msg.present);