qt: don't show rpcconnect command line option in help

GUI can't connect to RPC. Showing this option in the help confuses
people, so remove it.

src/init.cpp

@@ -333,7 +333,9 @@ std::string HelpMessage()
         "  -rpcpassword=<pw>      " + _("Password for JSON-RPC connections") + "\n" +
         "  -rpcport=<port>        " + _("Listen for JSON-RPC connections on <port> (default: 8332 or testnet: 18332)") + "\n" +
         "  -rpcallowip=<ip>       " + _("Allow JSON-RPC connections from specified IP address") + "\n" +
+#ifndef QT_GUI
         "  -rpcconnect=<ip>       " + _("Send commands to node running on <ip> (default: 127.0.0.1)") + "\n" +
+#endif
         "  -rpcthreads=<n>        " + _("Set the number of threads to service RPC calls (default: 4)") + "\n" +
         "  -blocknotify=<cmd>     " + _("Execute command when the best block changes (%s in cmd is replaced by block hash)") + "\n" +
         "  -walletnotify=<cmd>    " + _("Execute command when a wallet transaction changes (%s in cmd is replaced by TxID)") + "\n" +