test: remove unneeded initialization code in feature_rbf.py

Author: theStack

test/functional/feature_rbf.py

@@ -84,11 +84,6 @@ def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()
 
     def run_test(self):
-        make_utxo(self.nodes[0], 1 * COIN)
-
-        # Ensure nodes are synced
-        self.sync_all()
-
         self.log.info("Running test simple doublespend...")
         self.test_simple_doublespend()