Remove test helper functions not backported

Signed-off-by: Waleed Elmelegy <waleed.elmelegy@arm.com>
diff --git a/tests/suites/test_suite_pkcs5.function b/tests/suites/test_suite_pkcs5.function
index bf7385e..231794d 100644
--- a/tests/suites/test_suite_pkcs5.function
+++ b/tests/suites/test_suite_pkcs5.function
@@ -41,8 +41,6 @@
     mbedtls_asn1_buf params;
     unsigned char *my_out = NULL;
 
-    MD_PSA_INIT();
-
     params.tag = params_tag;
     params.p = params_hex->x;
     params.len = params_hex->len;
@@ -59,7 +57,6 @@
 
 exit:
     mbedtls_free(my_out);
-    MD_PSA_DONE();
 }
 /* END_CASE */