tests: Remove unused #define

This was leftover from an earlier implementation of load_blob().

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>

tests/testutils.c

@@ -159,8 +159,6 @@ int nodename_eq(const char *s1, const char *s2)
 		return 0;
 }
 
-#define CHUNKSIZE	128
-
 void *load_blob(const char *filename)
 {
 	char *blob;