Fixed compilation problem of non-addon version if no pthread.h

is available.


git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@7340 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/states_screens/main_menu_screen.hpp

@@ -18,7 +18,6 @@
 #ifndef HEADER_MAIN_MENU_SCREEN_HPP
 #define HEADER_MAIN_MENU_SCREEN_HPP
 
-#include <pthread.h>
 #include "guiengine/screen.hpp"
 
 namespace GUIEngine { class Widget; }