Fixed not needed standard includes in test program.
diff --git a/test/testdrawchessboard.c b/test/testdrawchessboard.c
index d4548ea..1f3c420 100644
--- a/test/testdrawchessboard.c
+++ b/test/testdrawchessboard.c
@@ -14,9 +14,6 @@
/* Sample program: Draw a Chess Board by using SDL_CreateSoftwareRenderer API */
-#include <stdlib.h>
-#include <stdio.h>
-
#include "SDL.h"
void