USB: microtek: remove unused semaphore

No current references, so removing it.
Signed-off-by: NDaniel Walker <dwalker@mvista.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/usb/image/microtek.c

@@ -794,7 +794,6 @@ static int mts_usb_probe(struct usb_interface *intf,
 
 	new_desc->usb_dev = dev;
 	new_desc->usb_intf = intf;
-	init_MUTEX(&new_desc->lock);
 
 	/* endpoints */
 	new_desc->ep_out = ep_out;

drivers/usb/image/microtek.h

@@ -39,7 +39,6 @@ struct mts_desc {
 	u8 ep_image;
 
 	struct Scsi_Host * host;
-	struct semaphore lock;
 
 	struct urb *urb;
 	struct mts_transfer_context context;