programs: ssl: Fix some mbedtls_ssl_conf_sig_algs() guards

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index 1fd63d2..b347f00 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -3232,11 +3232,10 @@
     }
 #endif
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3) && \
-    defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
+#if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
     if( opt.sig_algs != NULL )
         mbedtls_ssl_conf_sig_algs( &conf, sig_alg_list );
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
+#endif
 
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)