bitcoin/tx: remove unused pull_bitcoin_tx_onto.

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

bitcoin/tx.c

@@ -381,12 +381,13 @@ static void pull_witness(struct bitcoin_tx_input *inputs, size_t i,
 	}
 }
 
-struct bitcoin_tx *pull_bitcoin_tx_onto(const tal_t *ctx, const u8 **cursor,
+struct bitcoin_tx *pull_bitcoin_tx(const tal_t *ctx, const u8 **cursor,
-					size_t *max, struct bitcoin_tx *tx)
+				   size_t *max)
 {
 	size_t i;
 	u64 count;
 	u8 flag = 0;
+	struct bitcoin_tx *tx = tal(ctx, struct bitcoin_tx);
 
 	tx->version = pull_le32(cursor, max);
 	count = pull_length(cursor, max, 32 + 4 + 4 + 1);
@@ -422,13 +423,6 @@ struct bitcoin_tx *pull_bitcoin_tx_onto(const tal_t *ctx, const u8 **cursor,
 	return tx;
 }
 
-struct bitcoin_tx *pull_bitcoin_tx(const tal_t *ctx,
-				   const u8 **cursor, size_t *max)
-{
-	struct bitcoin_tx *tx = tal(ctx, struct bitcoin_tx);
-	return pull_bitcoin_tx_onto(ctx, cursor, max, tx);
-}
-
 struct bitcoin_tx *bitcoin_tx_from_hex(const tal_t *ctx, const char *hex,
 				       size_t hexlen)
 {

bitcoin/tx.h

@@ -71,18 +71,4 @@ bool bitcoin_txid_to_hex(const struct bitcoin_txid *txid,
 struct bitcoin_tx *pull_bitcoin_tx(const tal_t *ctx,
 				   const u8 **cursor, size_t *max);
 
-/**
- * pull_bitcoin_tx_onto - De-serialize a bitcoin tx into tx
- *
- * Like pull_bitcoin_tx, but skips the allocation of tx. Used by the
- * wire implementation where the caller allocates, and the callee only
- * fills in values.
- *
- * @ctx: Allocation context
- * @cursor: buffer to read from
- * @max: Buffer size left to read
- * @tx (out): Destination transaction
- */
-struct bitcoin_tx *pull_bitcoin_tx_onto(const tal_t *ctx, const u8 **cursor,
-					size_t *max, struct bitcoin_tx *tx);
 #endif /* LIGHTNING_BITCOIN_TX_H */

wire/fromwire.c

@@ -225,7 +225,6 @@ void derive_channel_id(struct channel_id *channel_id,
 	channel_id->id[sizeof(*channel_id)-1] ^= txout;
 }
 
-/* FIXME: Simply rename pull_bitcoin_tx, remove pull_bitcoin_tx_onto */
 struct bitcoin_tx *fromwire_bitcoin_tx(const tal_t *ctx,
 				       const u8 **cursor, size_t *max)
 {