test: Drop the function for running upl tests

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

It is not clear that these actually work, since they are not enabled on
sandbox for some reason.

Signed-off-by: Simon Glass <sjg@chromium.org>

test/cmd_ut.c

@@ -190,7 +190,7 @@ static struct suite suites[] = {
 	SUITE(seama),
 #endif
 #ifdef CONFIG_CMD_UPL
-	SUITE_CMD(upl, do_ut_upl),
+	SUITE(upl),
 #endif
 };