media: pisp_be: Drop reference to non-existing function

A comment in the pisp_be driver references the
pispbe_schedule_internal() function which doesn't exist.

Drop it.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>

Author: Jacopo Mondi

drivers/media/platform/raspberrypi/pisp_be/pisp_be.c

@@ -388,10 +388,7 @@ static void pispbe_xlate_addrs(struct pispbe_job_descriptor *job,
 	ret = pispbe_get_planes_addr(addrs, buf[MAIN_INPUT_NODE],
 				     &node_group->node[MAIN_INPUT_NODE]);
 	if (ret <= 0) {
-		/*
-		 * This shouldn't happen; pispbe_schedule_internal should insist
-		 * on an input.
-		 */
+		/* Shouldn't happen, we have validated an input is available. */
 		dev_warn(node_group->pispbe->dev, "ISP-BE missing input\n");
 		hw_en->bayer_enables = 0;
 		hw_en->rgb_enables = 0;