wallet: Enable -walletrbf by default

test/functional/wallet_listtransactions.py

@@ -25,7 +25,7 @@ class ListTransactionsTest(BitcoinTestFramework):
         self.num_nodes = 3
         # This test isn't testing txn relay/timing, so set whitelist on the
         # peers for instant txn relay. This speeds up the test run time 2-3x.
-        self.extra_args = [["-whitelist=noban@127.0.0.1"]] * self.num_nodes
+        self.extra_args = [["-whitelist=noban@127.0.0.1", "-walletrbf=0"]] * self.num_nodes
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()