--- zzzz-none-000/linux-3.10.107/drivers/isdn/gigaset/gigaset.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/isdn/gigaset/gigaset.h	2021-02-04 17:41:59.000000000 +0000
@@ -751,9 +751,6 @@
 /* Tell common.c that the driver is being unloaded. */
 int gigaset_shutdown(struct cardstate *cs);
 
-/* Tell common.c that an skb has been sent. */
-void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb);
-
 /* Append event to the queue.
  * Returns NULL on failure or a pointer to the event on success.
  * ptr must be kmalloc()ed (and not be freed by the caller).