Remove obsolete MBEDTLS_ALLOW_PRIVATE_ACCESS from helpers function.
MBEDTLS_ALLOW_PRIVATE_ACCESS is already defined inside test/helpers.h
/*----------------------------------------------------------------------------*/
/* Headers */
-#define MBEDTLS_ALLOW_PRIVATE_ACCESS
-
-#include <test/macros.h>
#include <test/helpers.h>
+#include <test/macros.h>
#include <test/random.h>
#include <test/psa_crypto_helpers.h>
