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/hotkey-edit.cpp

@@ -293,13 +293,11 @@ void OBSHotkeyWidget::AddEdit(obs_key_combination combo, int idx)
 
 	auto add = new QPushButton;
 	add->setProperty("themeID", "addIconSmall");
-	add->setToolTip(QTStr("Add"));
 	add->setFixedSize(24, 24);
 	add->setFlat(true);
 
 	auto remove = new QPushButton;
 	remove->setProperty("themeID", "removeIconSmall");
-	remove->setToolTip(QTStr("Remove"));
 	remove->setEnabled(removeButtons.size() > 0);
 	remove->setFixedSize(24, 24);
 	remove->setFlat(true);