Separated time state from window system state.

src/x11_platform.h

@@ -62,9 +62,7 @@
  #error "No supported context creation API selected"
 #endif
 
-#define _GLFW_POSIX_TIME_CONTEXT            _glfw.x11.timer
 #include "posix_time.h"
-
 #include "linux_joystick.h"
 
 #define _GLFW_PLATFORM_WINDOW_STATE         _GLFWwindowX11  x11
@@ -204,8 +202,6 @@ typedef struct _GLFWlibraryX11
         int         exposure;
     } saver;
 
-    _GLFWtimePOSIX  timer;
-
     struct {
         char*       string;
     } selection;