more 'unreachable code' warnings which had been disabled instead of being fixed

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@35847 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/motif/toplevel.cpp

@@ -65,14 +65,7 @@ static void wxTLWEventHandler( Widget wid,
 
 void wxTopLevelWindowMotif::PreDestroy()
 {
-#ifdef __VMS
-#pragma message disable codcauunr
-#endif
-   if ( (GetWindowStyleFlag() & wxDIALOG_MODAL) != wxDIALOG_MODAL )
-        wxModelessWindows.DeleteObject(this);
-#ifdef __VMS
-#pragma message enable codcauunr
-#endif
+    wxModelessWindows.DeleteObject(this);
 
     m_icons.m_icons.Empty();