dtc/tests: don't include fdt.h prior to libfdt.h

tests will need fdt type definitions provided in a subsequent patch
to libfdt_env.h.  Since libfdt.h includes libfdt_env.h in the right
order anyway, just remove the fdt.h include.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>

tests/path_offset_aliases.c

@@ -23,7 +23,6 @@
 #include <string.h>
 #include <stdint.h>
 
-#include <fdt.h>
 #include <libfdt.h>
 
 #include "tests.h"