It doesn't make sense to keep the old and almost never used alternative
wxClipboard implementation which has known fatal bugs (such as casts of
wxDataObject that could be wxDataObjectComposite to wxBitmapDataObject,
see #23564) when wxUSE_OLE is never going to be disabled anyhow.
Note that this means wxSetClipboardData() function doesn't exist at all
any longer when previously it was available in the wxUSE_OLE==0 builds.
As the official builds always used wxUSE_OLE==1, this doesn't look like
a huge loss, but if needed, we could add it back later and reimplement
it in terms of wxClipboard::SetData().
8a95a93a1d
