message: qt: Untie irrelevant signal-slot parameters
  QAbstractButton::clicked signal has the `checked` parameter that is
  irrelevant to RPCConsole::clear slot parameter.
diff: @@ -503,7 +503,7 @@ RPCConsole::RPCConsole(interfaces::Node& node, const PlatformStyle *_platformSty
  ui->lineEdit->setMaxLength(16 * 1024 * 1024);
  ui->messagesWidget->installEventFilter(this);
  - connect(ui->clearButton, &QPushButton::clicked, this, &RPCConsole::clear);
  + connect(ui->clearButton, &QPushButton::clicked, [this] { clear(/* clearHistory */ false); });
  connect(ui->fontBiggerButton, &QPushButton::clicked, this, &RPCConsole::fontBigger);
  connect(ui->fontSmallerButton, &QPushButton::clicked, this, &RPCConsole::fontSmaller);
  connect(ui->btnClearTrafficGraph, &QPushButton::clicked, ui->trafficGraph, &TrafficGraphWidget::clear);
  