message: log: Remove "No rpcpassword set" from logs
diff: @@ -249,7 +249,7 @@ static bool InitRPCAuthentication()
  {
  if (gArgs.GetArg("-rpcpassword", "") == "")
  {
  - LogPrintf("No rpcpassword set - using random cookie authentication.\n");
  + LogPrintf("Using random cookie authentication.\n");
  if (!GenerateAuthCookie(&strRPCUserColonPass)) {
  uiInterface.ThreadSafeMessageBox(
  _("Error: A fatal internal error occurred, see debug.log for details"), // Same message as AbortNode
  