removed all compile- and run-time checks for GTK+ < 2.4; don't include the generic files which are now never used in wxGTK in the build

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@49660 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/clrpicker.h

@@ -12,16 +12,12 @@
 #ifndef _WX_GTK_CLRPICKER_H_
 #define _WX_GTK_CLRPICKER_H_
 
-// since GtkColorButton is available only for GTK+ >= 2.4,
-// we need to use generic version if we detect (at runtime)
-// that GTK+ < 2.4
-#include "wx/generic/clrpickerg.h"
-
 //-----------------------------------------------------------------------------
 // wxColourButton
 //-----------------------------------------------------------------------------
 
-class WXDLLIMPEXP_CORE wxColourButton : public wxGenericColourButton
+class WXDLLIMPEXP_CORE wxColourButton : public wxButton,
+                                        public wxColourPickerWidgetBase
 {
 public:
     wxColourButton() : m_topParent(NULL) {}
@@ -38,11 +34,6 @@ public:
         Create(parent, id, initial, pos, size, style, validator, name);
     }
 
-    virtual ~wxColourButton();
-
-
-public:     // overrides
-
     bool Create(wxWindow *parent,
                 wxWindowID id,
                 const wxColour& initial = *wxBLACK,
@@ -52,6 +43,8 @@ public:     // overrides
                 const wxValidator& validator = wxDefaultValidator,
                 const wxString& name = wxColourPickerWidgetNameStr);
 
+    virtual ~wxColourButton();
+
 protected:
     void UpdateColour();