Remove ATSU-related dead code from wxOSX

ATSU was deprecated for a long time and was finally removed from OS X
SDK in 10.11. wxOSX_USE_ATSU_TEXT was unconditionally disabled already,
so the code was never used and can be safely removed.

src/osx/carbon/graphics.cpp

@@ -823,9 +823,6 @@ public:
     wxMacCoreGraphicsFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
     ~wxMacCoreGraphicsFontData();
 
-#if wxOSX_USE_ATSU_TEXT
-    virtual ATSUStyle GetATSUStyle() { return m_macATSUIStyle; }
-#endif
     CTFontRef OSXGetCTFont() const { return m_ctFont ; }
     wxColour GetColour() const { return m_colour ; }
 
@@ -839,9 +836,6 @@ private :
     wxColour m_colour;
     bool m_underlined,
          m_strikethrough;
-#if wxOSX_USE_ATSU_TEXT
-    ATSUStyle m_macATSUIStyle;
-#endif
     wxCFRef< CTFontRef > m_ctFont;
 #if wxOSX_USE_IPHONE
     UIFont*  m_uiFont;
@@ -859,52 +853,10 @@ wxMacCoreGraphicsFontData::wxMacCoreGraphicsFontData(wxGraphicsRenderer* rendere
     m_uiFont = CreateUIFont(font);
     wxMacCocoaRetain( m_uiFont );
 #endif
-#if wxOSX_USE_ATSU_TEXT
-    OSStatus status = noErr;
-    m_macATSUIStyle = NULL;
-
-    status = ATSUCreateAndCopyStyle( (ATSUStyle) font.MacGetATSUStyle() , &m_macATSUIStyle );
-
-    wxASSERT_MSG( status == noErr, wxT("couldn't create ATSU style") );
-
-    // we need the scale here ...
-
-    Fixed atsuSize = IntToFixed( int( 1 * font.GetPointSize()) );
-    RGBColor atsuColor ;
-    col.GetRGBColor( &atsuColor );
-    ATSUAttributeTag atsuTags[] =
-    {
-            kATSUSizeTag ,
-            kATSUColorTag ,
-    };
-    ByteCount atsuSizes[WXSIZEOF(atsuTags)] =
-    {
-            sizeof( Fixed ) ,
-            sizeof( RGBColor ) ,
-    };
-    ATSUAttributeValuePtr atsuValues[WXSIZEOF(atsuTags)] =
-    {
-            &atsuSize ,
-            &atsuColor ,
-    };
-
-    status = ::ATSUSetAttributes(
-        m_macATSUIStyle, WXSIZEOF(atsuTags),
-        atsuTags, atsuSizes, atsuValues);
-
-    wxASSERT_MSG( status == noErr , wxT("couldn't modify ATSU style") );
-#endif
 }
 
 wxMacCoreGraphicsFontData::~wxMacCoreGraphicsFontData()
 {
-#if wxOSX_USE_ATSU_TEXT
-    if ( m_macATSUIStyle )
-    {
-        ::ATSUDisposeStyle((ATSUStyle)m_macATSUIStyle);
-        m_macATSUIStyle = NULL;
-    }
-#endif
 #if wxOSX_USE_IPHONE
     wxMacCocoaRelease( m_uiFont );
 #endif