test: Reduce unneeded whitelist permissions in tests

test/functional/feature_dersig.py

@@ -40,7 +40,10 @@ def unDERify(tx):
 class BIP66Test(BitcoinTestFramework):
     def set_test_params(self):
         self.num_nodes = 1
-        self.extra_args = [['-whitelist=127.0.0.1', '-par=1']]  # Use only one script thread to get the exact log msg for testing
+        self.extra_args = [[
+            '-whitelist=noban@127.0.0.1',
+            '-par=1',  # Use only one script thread to get the exact log msg for testing
+        ]]
         self.setup_clean_chain = True
         self.rpc_timeout = 120