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

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@39285 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/x11/window.cpp

@@ -38,6 +38,7 @@
     #include "wx/button.h"
     #include "wx/menu.h"
     #include "wx/dialog.h"
+    #include "wx/timer.h"
 #endif
 
 #include "wx/layout.h"
@@ -58,11 +59,6 @@
 #include "wx/x11/private.h"
 #include "X11/Xutil.h"
 
-#if wxUSE_NANOX
-// For wxGetLocalTime, used by XButtonEventGetTime
-#include "wx/timer.h"
-#endif
-
 #include <string.h>
 
 // ----------------------------------------------------------------------------