Fixed including SDL_internal.h twice for DirectFB.
diff --git a/src/video/directfb/SDL_DirectFB_video.c b/src/video/directfb/SDL_DirectFB_video.c
index 4135fe0..55e9ece 100644
--- a/src/video/directfb/SDL_DirectFB_video.c
+++ b/src/video/directfb/SDL_DirectFB_video.c
@@ -35,8 +35,6 @@
#include "SDL_DirectFB_WM.h"
-#include "../../SDL_internal.h"
-
/* DirectFB video driver implementation.
*/