[Trivial] Remove incorrect help message from gettxoutproof()

Github-Pull: #9711
Rebased-From: 9949ebfa6a

src/rpc/rawtransaction.cpp

@@ -245,7 +245,6 @@ UniValue gettxoutproof(const JSONRPCRequest& request)
             "unspent output in the utxo for this transaction. To make it always work,\n"
             "you need to maintain a transaction index, using the -txindex command line option or\n"
             "specify the block in which the transaction is included manually (by blockhash).\n"
-            "\nReturn the raw transaction data.\n"
             "\nArguments:\n"
             "1. \"txids\"       (string) A json array of txids to filter\n"
             "    [\n"