net: cdc_ncm: remove unused udev field

We already use the usbnet udev field everywhere this could have
been used.

Cc: Alexey Orishko <alexey.orishko@gmail.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/usb/cdc_ncm.c

@@ -388,8 +388,6 @@ int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_
 	buf = intf->cur_altsetting->extra;
 	len = intf->cur_altsetting->extralen;
 
-	ctx->udev = dev->udev;
-
 	/* parse through descriptors associated with control interface */
 	while ((len > 0) && (buf[0] > 2) && (buf[0] <= len)) {
 

include/linux/usb/cdc_ncm.h

@@ -98,7 +98,6 @@ struct cdc_ncm_ctx {
 	const struct usb_cdc_union_desc *union_desc;
 	const struct usb_cdc_ether_desc *ether_desc;
 
-	struct usb_device *udev;
 	struct usb_interface *control;
 	struct usb_interface *data;