[subset] Remove hb_subset(). Leaving just hb_subset_or_fail().
diff --git a/test/api/hb-subset-test.h b/test/api/hb-subset-test.h
index 91968c3..1fc5a48 100644
--- a/test/api/hb-subset-test.h
+++ b/test/api/hb-subset-test.h
@@ -83,7 +83,7 @@
 hb_subset_test_create_subset (hb_face_t *source,
 			      hb_subset_input_t *input)
 {
-  hb_face_t *subset = hb_subset (source, input);
+  hb_face_t *subset = hb_subset_or_fail (source, input);
   g_assert (subset);
 
   hb_subset_input_destroy (input);