This field can't be set reliably as we don't know if LoadImage() Windows function loaded an 0RGB or an RGB bitmap so remove it completely to avoid the risk of using it wrongly. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65899 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775