test: Use rpc_deprecated only for testing deprecation

Author: fjahr

test/functional/rpc_deprecated.py

@@ -1,29 +1,29 @@
 #!/usr/bin/env python3
-# Copyright (c) 2017-2021 The Bitcoin Core developers
+# Copyright (c) 2017-2025 The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test deprecation of RPC calls."""
 from test_framework.test_framework import BitcoinTestFramework
 
 class DeprecatedRpcTest(BitcoinTestFramework):
     def set_test_params(self):
-        self.num_nodes = 2
+        self.num_nodes = 1
         self.setup_clean_chain = True
-        self.extra_args = [[], ['-deprecatedrpc=bumpfee']]
+        self.extra_args = [[]]
 
     def run_test(self):
-        # This test should be used to verify correct behaviour of deprecated
-        # RPC methods with and without the -deprecatedrpc flags. For example:
+        # This test should be used to verify the errors of the currently
+        # deprecated RPC methods (without the -deprecatedrpc flag) until
+        # such RPCs are fully removed. For example:
         #
-        # In set_test_params:
-        # self.extra_args = [[], ["-deprecatedrpc=generate"]]
-        #
-        # In run_test:
         # self.log.info("Test generate RPC")
         # assert_raises_rpc_error(-32, 'The wallet generate rpc method is deprecated', self.nodes[0].rpc.generate, 1)
-        # self.generate(self.nodes[1], 1)
+        #
+        # Please ensure that for all the RPC methods tested here, there is
+        # at least one other functional test that still tests the RPCs
+        # functionality using the respective -deprecatedrpc flag.
 
-        self.log.info("No tested deprecated RPC methods")
+        self.log.info("Currently no tests for deprecated RPC methods")
 
 if __name__ == '__main__':
     DeprecatedRpcTest(__file__).main()