Remove obsolete MBEDTLS_ALLOW_PRIVATE_ACCESS from helpers function.

MBEDTLS_ALLOW_PRIVATE_ACCESS is already defined inside test/helpers.h

Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
diff --git a/tests/suites/helpers.function b/tests/suites/helpers.function
index ae1bc88..2a75752 100644
--- a/tests/suites/helpers.function
+++ b/tests/suites/helpers.function
@@ -2,10 +2,8 @@
 /*----------------------------------------------------------------------------*/
 /* 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>