Eliminate one wxRect constructor in BOX2

The only usage auto converted to BOX2D anyway...

common/eda_draw_frame.cpp

@@ -857,7 +857,7 @@ void EDA_DRAW_FRAME::FocusOnLocation( const wxPoint& aPos )
         // If a dialog partly obscures the window, then center on the uncovered area.
         if( dialog )
         {
-            wxRect dialogRect( GetCanvas()->ScreenToClient( dialog->GetScreenPosition() ),
+            BOX2D dialogRect( GetCanvas()->ScreenToClient( dialog->GetScreenPosition() ),
                                dialog->GetSize() );
             GetCanvas()->GetView()->SetCenter( aPos, dialogRect );
         }

libs/kimath/include/math/box2.h

@@ -60,16 +60,6 @@ public:
         Normalize();
     }
 
-#ifdef WX_COMPATIBILITY
-    /// Constructor with a wxRect as argument
-    BOX2( const wxRect& aRect ) :
-        m_Pos( aRect.GetPosition() ),
-        m_Size( aRect.GetSize() )
-    {
-        Normalize();
-    }
-#endif
-
     void SetMaximum()
     {
         m_Pos.x  = m_Pos.y = coord_limits::lowest() / 2 + coord_limits::epsilon();