GUI: RTL: Fix small issues

- Remove unused variable in tab.cpp
- Remove wrong check for alignment in popups. For rtl, set align to right.

gui/widgets/popup.cpp

@@ -405,12 +405,7 @@ void PopUpDialog::drawMenuEntry(int entry, bool hilite) {
 		r2.left = g_system->getOverlayWidth() - r2.left - w + g_gui.getOverlayOffset();
 		r2.right = r2.left + w;
 
-		if (_boss->getFlags() == 305) {
-			alignment = Graphics::kTextAlignCenter;		// GUI FIXME: This is not a good way to say that I am a DropDownButtonWidget
-		} else {
-			alignment = Graphics::kTextAlignRight;
-		}
-
+		alignment = Graphics::kTextAlignRight;
 		pad = _rightPadding;
 	}
 

gui/widgets/tab.cpp

@@ -386,11 +386,9 @@ void TabWidget::reflowLayout() {
 void TabWidget::drawWidget() {
 	Common::Array<Common::String> tabs;
 	Common::Array<int> widths;
-	int totalWidth = 0;
 	for (int i = _firstVisibleTab; i <= _lastVisibleTab; ++i) {
 		tabs.push_back(_tabs[i].title);
 		widths.push_back(_tabs[i]._tabWidth);
-		totalWidth += _tabs[i]._tabWidth;
 	}
 
 	g_gui.theme()->drawDialogBackground(