Fix comment in dlopen.c to remove reference to deprecated API

Signed-off-by: Ari Weiler-Ofek <ari.weiler-ofek@arm.com>
diff --git a/programs/test/dlopen.c b/programs/test/dlopen.c
index 9aba733..58a6af5 100644
--- a/programs/test/dlopen.c
+++ b/programs/test/dlopen.c
@@ -105,8 +105,7 @@
         dlsym(crypto_so, "psa_hash_compute");
 
 #pragma GCC diagnostic pop
-    /* Use psa_hash_compute from PSA Crypto API instead of deprecated mbedtls_md_list()
-     * to demonstrate runtime linking of libmbedcrypto / libtfpsacrypto */
+    /* Demonstrate hashing a message with PSA Crypto */
 
     CHECK_DLERROR("dlsym", "psa_crypto_init");
     CHECK_DLERROR("dlsym", "psa_hash_compute");