Don't destroy the key during a MAC verification operation

An early draft of the PSA crypto specification required multipart
operations to keep working after destroying the key. This is no longer
the case: instead, now, operations are guaranteed to fail. Mbed TLS
does not comply yet, and still allows the operation to keep going.
Stop testing Mbed TLS's non-compliant behavior.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/tests/suites/test_suite_psa_crypto.function b/tests/suites/test_suite_psa_crypto.function
index 4b70115..1ff083c 100644
--- a/tests/suites/test_suite_psa_crypto.function
+++ b/tests/suites/test_suite_psa_crypto.function
@@ -3114,7 +3114,6 @@
 
     PSA_ASSERT( psa_mac_verify_setup( &operation,
                                       handle, alg ) );
-    PSA_ASSERT( psa_destroy_key( handle ) );
     PSA_ASSERT( psa_mac_update( &operation,
                                 input->x, input->len ) );
     PSA_ASSERT( psa_mac_verify_finish( &operation,