Revert "UI: Various screen reader fixes"

This reverts commit b5843caa48.

This breaks some hotkeys because the signals are tied to a signal which
is now triggered because "toggled" is used instead of "clicked", so just
revert it for now for the release and look at it later post-patch.

UI/slider-ignorewheel.cpp

@@ -1,5 +1,4 @@
 #include "slider-ignorewheel.hpp"
-#include "volume-control.hpp"
 
 SliderIgnoreScroll::SliderIgnoreScroll(QWidget *parent) : QSlider(parent)
 {
@@ -21,82 +20,3 @@ void SliderIgnoreScroll::wheelEvent(QWheelEvent *event)
 	else
 		QSlider::wheelEvent(event);
 }
-
-VolumeSlider::VolumeSlider(obs_fader_t *fader, QWidget *parent)
-	: SliderIgnoreScroll(parent)
-{
-	fad = fader;
-}
-
-VolumeSlider::VolumeSlider(obs_fader_t *fader, Qt::Orientation orientation,
-			   QWidget *parent)
-	: SliderIgnoreScroll(orientation, parent)
-{
-	fad = fader;
-}
-
-VolumeAccessibleInterface::VolumeAccessibleInterface(QWidget *w)
-	: QAccessibleWidget(w)
-{
-}
-
-VolumeSlider *VolumeAccessibleInterface::slider() const
-{
-	return qobject_cast<VolumeSlider *>(object());
-}
-
-QString VolumeAccessibleInterface::text(QAccessible::Text t) const
-{
-	if (slider()->isVisible()) {
-		switch (t) {
-		case QAccessible::Text::Value:
-			return currentValue().toString();
-		default:
-			break;
-		}
-	}
-	return QAccessibleWidget::text(t);
-}
-
-QVariant VolumeAccessibleInterface::currentValue() const
-{
-	QString text;
-	float db = obs_fader_get_db(slider()->fad);
-
-	if (db < -96.0f)
-		text = "-inf dB";
-	else
-		text = QString::number(db, 'f', 1).append(" dB");
-
-	return text;
-}
-
-void VolumeAccessibleInterface::setCurrentValue(const QVariant &value)
-{
-	slider()->setValue(value.toInt());
-}
-
-QVariant VolumeAccessibleInterface::maximumValue() const
-{
-	return slider()->maximum();
-}
-
-QVariant VolumeAccessibleInterface::minimumValue() const
-{
-	return slider()->minimum();
-}
-
-QVariant VolumeAccessibleInterface::minimumStepSize() const
-{
-	return slider()->singleStep();
-}
-
-QAccessible::Role VolumeAccessibleInterface::role() const
-{
-	return QAccessible::Role::Slider;
-}
-
-/**QAccessible::State VolumeAccessibleInterface::state() const
-{
-	return QAccessible::State::
-}**/