Codechange: Remove unused parameter for Height()

DropDownListItem::Height does not need to take an argument so remove it

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

src/company_gui.cpp

@@ -597,7 +597,7 @@ public:
 		return ScaleGUITrad(28) + WidgetDimensions::scaled.hsep_normal + GetStringBoundingBox(this->String()).width + WidgetDimensions::scaled.dropdowntext.Horizontal();
 	}
 
-	uint Height(uint) const override
+	uint Height() const override
 	{
 		return std::max(FONT_HEIGHT_NORMAL, ScaleGUITrad(12) + WidgetDimensions::scaled.vsep_normal);
 	}