Remove outdated documentation remarks on Windows prior XP.

Since Windows XP is now the minimum supported target all remarks referencing differences in Windows versions prior XP have been removed or updated.

interface/wx/print.h

@@ -526,8 +526,8 @@ public:
     /**
         Invokes the print setup dialog.
 
-        @remarks
-        The setup dialog is obsolete from Windows 95, though retained
+        @deprecated
+        The setup dialog is obsolete, though retained
         for backward compatibility.
     */
     virtual bool Setup(wxWindow* parent);