wallet, test: remove -walletrbf startup option from wallet_listtransactions.py

diff --git a/test/functional/wallet_listtransactions.py b/test/functional/wallet_listtransactions.py
index 80afe45d..59ed1d4e 100755
--- a/test/functional/wallet_listtransactions.py
+++ b/test/functional/wallet_listtransactions.py
@@ -11,10 +11,6 @@ import shutil
 
 from test_framework.blocktools import MAX_FUTURE_BLOCK_TIME
 from test_framework.descriptors import descsum_create
-from test_framework.messages import (
-    COIN,
-    tx_from_hex,
-)
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_not_equal,
@@ -23,7 +19,7 @@ from test_framework.util import (
     assert_raises_rpc_error,
     find_vout_for_address,
 )
-from test_framework.wallet_util import get_generate_key, WALLETRBF_DEPRECATION_WARNING
+from test_framework.wallet_util import get_generate_key
 
 
 class ListTransactionsTest(BitcoinTestFramework):
@@ -31,7 +27,6 @@ class ListTransactionsTest(BitcoinTestFramework):
         self.num_nodes = 3
         # whitelist peers to speed up tx relay / mempool sync
         self.noban_tx_relay = True
-        self.extra_args = [["-walletrbf=0"]] * self.num_nodes
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()
@@ -97,91 +92,12 @@ class ListTransactionsTest(BitcoinTestFramework):
                             {"category": "receive", "amount": Decimal("0.44")},
                             {"txid": txid})
 
-        self.run_rbf_opt_in_test()
         self.run_externally_generated_address_test()
         self.run_coinjoin_test()
         self.run_invalid_parameters_test()
         self.test_op_return()
         self.test_from_me_status_change()
 
-        for index, _ in enumerate(self.nodes):
-            self.stop_node(index, expected_stderr=WALLETRBF_DEPRECATION_WARNING)
-
-    def run_rbf_opt_in_test(self):
-        """Test the opt-in-rbf flag for sent and received transactions."""
-
-        def is_opt_in(node, txid):
-            """Check whether a transaction signals opt-in RBF itself."""
-            rawtx = node.getrawtransaction(txid, 1)
-            for x in rawtx["vin"]:
-                if x["sequence"] < 0xfffffffe:
-                    return True
-            return False
-
-        def get_unconfirmed_utxo_entry(node, txid_to_match):
-            """Find an unconfirmed output matching a certain txid."""
-            utxo = node.listunspent(0, 0)
-            for i in utxo:
-                if i["txid"] == txid_to_match:
-                    return i
-            return None
-
-        self.log.info("Test txs w/o opt-in RBF")
-        # Chain a few transactions that don't opt in.
-        txid_1 = self.nodes[0].sendtoaddress(self.nodes[1].getnewaddress(), 1)
-        assert not is_opt_in(self.nodes[0], txid_1)
-        self.sync_mempools()
-
-        # Tx2 will build off tx1, still not opting in to RBF.
-        utxo_to_use = get_unconfirmed_utxo_entry(self.nodes[0], txid_1)
-        assert_equal(utxo_to_use["safe"], True)
-        utxo_to_use = get_unconfirmed_utxo_entry(self.nodes[1], txid_1)
-        assert_equal(utxo_to_use["safe"], False)
-
-        # Create tx2 using createrawtransaction
-        inputs = [{"txid": utxo_to_use["txid"], "vout": utxo_to_use["vout"]}]
-        outputs = {self.nodes[0].getnewaddress(): 0.999}
-        tx2 = self.nodes[1].createrawtransaction(inputs=inputs, outputs=outputs, replaceable=False)
-        tx2_signed = self.nodes[1].signrawtransactionwithwallet(tx2)["hex"]
-        txid_2 = self.nodes[1].sendrawtransaction(tx2_signed)
-
-        # ...and check the result
-        assert not is_opt_in(self.nodes[1], txid_2)
-        self.sync_mempools()
-
-        self.log.info("Test txs with opt-in RBF")
-        # Tx3 will opt-in to RBF
-        utxo_to_use = get_unconfirmed_utxo_entry(self.nodes[0], txid_2)
-        inputs = [{"txid": txid_2, "vout": utxo_to_use["vout"]}]
-        outputs = {self.nodes[1].getnewaddress(): 0.998}
-        tx3 = self.nodes[0].createrawtransaction(inputs, outputs)
-        tx3_modified = tx_from_hex(tx3)
-        tx3_modified.vin[0].nSequence = 0
-        tx3 = tx3_modified.serialize().hex()
-        tx3_signed = self.nodes[0].signrawtransactionwithwallet(tx3)['hex']
-        txid_3 = self.nodes[0].sendrawtransaction(tx3_signed)
-        assert is_opt_in(self.nodes[0], txid_3)
-        self.sync_mempools()
-
-        # Tx4 will chain off tx3.  Doesn't signal itself, but depends on one
-        # that does.
-        utxo_to_use = get_unconfirmed_utxo_entry(self.nodes[1], txid_3)
-        inputs = [{"txid": txid_3, "vout": utxo_to_use["vout"]}]
-        outputs = {self.nodes[0].getnewaddress(): 0.997}
-        tx4 = self.nodes[1].createrawtransaction(inputs=inputs, outputs=outputs, replaceable=False)
-        tx4_signed = self.nodes[1].signrawtransactionwithwallet(tx4)["hex"]
-        txid_4 = self.nodes[1].sendrawtransaction(tx4_signed)
-        assert not is_opt_in(self.nodes[1], txid_4)
-
-        self.log.info("Test tx with unknown RBF state")
-        # Replace tx3, and check that tx4 becomes unknown
-        tx3_b = tx3_modified
-        tx3_b.vout[0].nValue -= int(Decimal("0.004") * COIN)  # bump the fee
-        tx3_b = tx3_b.serialize().hex()
-        tx3_b_signed = self.nodes[0].signrawtransactionwithwallet(tx3_b)['hex']
-        txid_3b = self.nodes[0].sendrawtransaction(tx3_b_signed, 0)
-        assert is_opt_in(self.nodes[0], txid_3b)
-
     def run_externally_generated_address_test(self):
         """Test behavior when receiving address is not in the address book."""