daemon_conn: don't expose daemon_conn_write_next.

No external callers.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

common/daemon_conn.c

@@ -13,7 +13,7 @@ struct io_plan *daemon_conn_read_next(struct io_conn *conn,
 			    dc);
 }
 
-struct io_plan *daemon_conn_write_next(struct io_conn *conn,
+static struct io_plan *daemon_conn_write_next(struct io_conn *conn,
 					      struct daemon_conn *dc)
 {
 	const u8 *msg;

common/daemon_conn.h

@@ -65,15 +65,6 @@ void daemon_conn_wake(struct daemon_conn *dc);
  */
 void daemon_conn_send_fd(struct daemon_conn *dc, int fd);
 
-/**
- * daemon_conn_write_next - Continue writing from the msg-queue
- *
- * Exposed here so that, if `msg_queue_cleared_cb` is used to break
- * out of the write-loop, we can get back in.
- */
-struct io_plan *daemon_conn_write_next(struct io_conn *conn,
-				       struct daemon_conn *dc);
-
 /**
  * daemon_conn_read_next - Read the next message
  */