test: Enable various tests for usage with cli

These tests run successfully on current master without any changes.

test/functional/wallet_txn_doublespend.py

@@ -14,7 +14,6 @@ from test_framework.util import (
 class TxnMallTest(BitcoinTestFramework):
     def set_test_params(self):
         self.num_nodes = 3
-        self.supports_cli = False
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()