[media] cx231xx: remove btcx_riscmem reference

Remove this comment block, it's unused. This removes the btcx_riscmem
reference as well, since that will no longer be available to other
drivers except bttv.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/usb/cx231xx/cx231xx.h

@@ -532,15 +532,7 @@ struct cx231xx_video_mode {
 	unsigned int *alt_max_pkt_size;	/* array of wMaxPacketSize */
 	u16 end_point_addr;
 };
-/*
-struct cx23885_dmaqueue {
-	struct list_head       active;
-	struct list_head       queued;
-	struct timer_list      timeout;
-	struct btcx_riscmem    stopper;
-	u32                    count;
-};
-*/
+
 struct cx231xx_tsport {
 	struct cx231xx *dev;