use native TAB traversal for GTK+ 2

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45073 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/button.cpp

@@ -111,7 +111,6 @@ bool wxButton::Create(  wxWindow *parent, wxWindowID id, const wxString &label,
       long style, const wxValidator& validator, const wxString &name )
 {
     m_needParent = true;
-    m_acceptsFocus = true;
 
     if (!PreCreation( parent, pos, size ) ||
         !CreateBase( parent, id, pos, size, style, validator, name ))