Remove empty comment in acpi/power.c

Remove an empty comment.
Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/acpi/power.c

@@ -171,7 +171,6 @@ static int acpi_power_get_list_state(struct acpi_handle_list *list, int *state)
 		return -EINVAL;
 
 	/* The state of the list is 'on' IFF all resources are 'on'. */
-	/* */
 
 	for (i = 0; i < list->count; i++) {
 		/*