[Tests] Rename create_tx and move to blocktools.py

test/functional/test_framework/util.py

@@ -526,14 +526,6 @@ def gen_return_txouts():
         txouts = txouts + script_pubkey
     return txouts
 
-def create_tx(node, coinbase, to_address, amount):
-    inputs = [{"txid": coinbase, "vout": 0}]
-    outputs = {to_address: amount}
-    rawtx = node.createrawtransaction(inputs, outputs)
-    signresult = node.signrawtransactionwithwallet(rawtx)
-    assert_equal(signresult["complete"], True)
-    return signresult["hex"]
-
 # Create a spend of each passed-in utxo, splicing in "txouts" to each raw
 # transaction to make it large.  See gen_return_txouts() above.
 def create_lots_of_big_transactions(node, txouts, utxos, num, fee):