USB: wusbcore: remove redundant re-assignment to pointer 'dev'

Pointer dev is initialized and then re-assigned with the same value
a little later, hence the second assignment is redundant and can be
removed.

Cleans up clang warning:
drivers/usb/wusbcore/wa-nep.c:88:17: warning: Value stored to 'dev'
during its initialization is never read

Signed-off-by: Colin Ian King <[e-mail]>
Reviewed-by: Johan Hovold <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/wusbcore/wa-nep.c

···
 		goto out;				/* screw it */
 #endif
 	atomic_dec(&wa->notifs_queued);		/* Throttling ctl */
-	dev = &wa->usb_iface->dev;
 	size = nw->size;
 	itr = nw->data;