Re-enable test that now works with new format

Previously the test didn't work because of embedded pointer values that
are not predictable. Now it works as we no longer serialize such values.

tests/suites/test_suite_ssl.function

@@ -794,7 +794,7 @@ exit:
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_SEE_FUTURE_PR */
+/* BEGIN_CASE */
 void ssl_serialize_session_load_save( int ticket_len, char *crt_file )
 {
     mbedtls_ssl_session session;