GTK1 fixes after wxObject-derived classes copy ctors/assignment operators simplifications (patch 1428863)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@37441 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk1/bitmap.cpp

@@ -1038,12 +1038,6 @@ wxImage wxBitmap::ConvertToImage() const
     return image;
 }
 
-wxBitmap::wxBitmap( const wxBitmap& bmp )
-        : wxBitmapBase()
-{
-    Ref( bmp );
-}
-
 wxBitmap::wxBitmap( const wxString &filename, wxBitmapType type )
 {
     LoadFile( filename, type );
@@ -1075,14 +1069,6 @@ wxBitmap::~wxBitmap()
 {
 }
 
-wxBitmap& wxBitmap::operator = ( const wxBitmap& bmp )
-{
-    if ( m_refData != bmp.m_refData )
-        Ref( bmp );
-
-    return *this;
-}
-
 bool wxBitmap::operator == ( const wxBitmap& bmp ) const
 {
     return m_refData == bmp.m_refData;