Include wx/toolbar.h according to precompiled headers of wx/wx.h (with other minor cleaning).

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@39623 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/window.cpp

@@ -28,16 +28,13 @@
     #include "wx/settings.h"
     #include "wx/msgdlg.h"
     #include "wx/textctrl.h"
+    #include "wx/toolbar.h"
 #endif
 
 #include "wx/layout.h"
 #include "wx/module.h"
 #include "wx/combobox.h"
 
-#if wxUSE_TOOLBAR_NATIVE
-    #include "wx/toolbar.h"
-#endif
-
 #if wxUSE_DRAG_AND_DROP
     #include "wx/dnd.h"
 #endif