test: Drop the function for running lib tests

Use the new suite-runner to run these tests instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/test/cmd_ut.c b/test/cmd_ut.c
index db96a4a..27d090c 100644
--- a/test/cmd_ut.c
+++ b/test/cmd_ut.c
@@ -152,7 +152,7 @@
 	SUITE_CMD(overlay, do_ut_overlay),
 #endif
 #ifdef CONFIG_UT_LIB
-	SUITE_CMD(lib, do_ut_lib),
+	SUITE(lib),
 #endif
 #ifdef CONFIG_UT_LOG
 	SUITE_CMD(log, do_ut_log),