test: Drop the function for running fdt 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 387aacb..0babc91 100644
--- a/test/cmd_ut.c
+++ b/test/cmd_ut.c
@@ -140,7 +140,7 @@
 #endif
 	SUITE(exit),
 #ifdef CONFIG_CMD_FDT
-	SUITE_CMD(fdt, do_ut_fdt),
+	SUITE(fdt),
 #endif
 #ifdef CONFIG_CONSOLE_TRUETYPE
 	SUITE_CMD(font, do_ut_font),