[rpc] remove resendwallettransactions RPC

This RPC was added for testing wallet rebroadcasts. Since we now have a
real test for wallet rebroadcasts, it's no longer needed.

The call in wallet_basic.py can be removed because
wallet_resendwallettransactions.py tests wallet rebroadcast.

src/wallet/rpcwallet.cpp

@@ -2668,50 +2668,6 @@ static UniValue unloadwallet(const JSONRPCRequest& request)
     return NullUniValue;
 }
 
-static UniValue resendwallettransactions(const JSONRPCRequest& request)
-{
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    CWallet* const pwallet = wallet.get();
-
-    if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
-        return NullUniValue;
-    }
-
-    if (request.fHelp || request.params.size() != 0)
-        throw std::runtime_error(
-            RPCHelpMan{"resendwallettransactions",
-                "Immediately re-broadcast unconfirmed wallet transactions to all peers.\n"
-                "Intended only for testing; the wallet code periodically re-broadcasts\n"
-                "automatically.\n",
-                {},
-                RPCResult{
-            "Returns an RPC error if -walletbroadcast is set to false.\n"
-            "Returns array of transaction ids that were re-broadcast.\n"
-                },
-                 RPCExamples{""},
-             }.ToString()
-            );
-
-    if (!pwallet->chain().p2pEnabled()) {
-        throw JSONRPCError(RPC_CLIENT_P2P_DISABLED, "Error: Peer-to-peer functionality missing or disabled");
-    }
-
-    auto locked_chain = pwallet->chain().lock();
-    LOCK(pwallet->cs_wallet);
-
-    if (!pwallet->GetBroadcastTransactions()) {
-        throw JSONRPCError(RPC_WALLET_ERROR, "Error: Wallet transaction broadcasting is disabled with -walletbroadcast");
-    }
-
-    std::vector<uint256> txids = pwallet->ResendWalletTransactionsBefore(*locked_chain, GetTime());
-    UniValue result(UniValue::VARR);
-    for (const uint256& txid : txids)
-    {
-        result.push_back(txid.ToString());
-    }
-    return result;
-}
-
 static UniValue listunspent(const JSONRPCRequest& request)
 {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
@@ -4085,7 +4041,6 @@ UniValue importmulti(const JSONRPCRequest& request);
 static const CRPCCommand commands[] =
 { //  category              name                                actor (function)                argNames
     //  --------------------- ------------------------          -----------------------         ----------
-    { "hidden",             "resendwallettransactions",         &resendwallettransactions,      {} },
     { "rawtransactions",    "fundrawtransaction",               &fundrawtransaction,            {"hexstring","options","iswitness"} },
     { "wallet",             "abandontransaction",               &abandontransaction,            {"txid"} },
     { "wallet",             "abortrescan",                      &abortrescan,                   {} },

test/functional/wallet_basic.py

@@ -14,7 +14,6 @@ from test_framework.util import (
     assert_raises_rpc_error,
     connect_nodes_bi,
     sync_blocks,
-    sync_mempools,
     wait_until,
 )
 
@@ -216,23 +215,9 @@ class WalletTest(BitcoinTestFramework):
         assert_equal(self.nodes[2].getbalance(), node_2_bal)
         node_0_bal = self.check_fee_amount(self.nodes[0].getbalance(), node_0_bal + Decimal('10'), fee_per_byte, self.get_vsize(self.nodes[2].gettransaction(txid)['hex']))
 
-        # Test ResendWalletTransactions:
-        # Create a couple of transactions, then start up a fourth
-        # node (nodes[3]) and ask nodes[0] to rebroadcast.
-        # EXPECT: nodes[3] should have those transactions in its mempool.
-        txid1 = self.nodes[0].sendtoaddress(self.nodes[1].getnewaddress(), 1)
-        txid2 = self.nodes[1].sendtoaddress(self.nodes[0].getnewaddress(), 1)
-        sync_mempools(self.nodes[0:2])
-
         self.start_node(3)
         connect_nodes_bi(self.nodes, 0, 3)
-        sync_blocks(self.nodes)
+        self.sync_all()
-
-        relayed = self.nodes[0].resendwallettransactions()
-        assert_equal(set(relayed), {txid1, txid2})
-        sync_mempools(self.nodes)
-
-        assert txid1 in self.nodes[3].getrawmempool()
 
         # check if we can list zero value tx as available coins
         # 1. create raw_tx