appletalk: Remove deadcode

alloc_ltalkdev in net/appletalk/dev.c is dead since
commit 00f3696f7555 ("net: appletalk: remove cops support")

Removing it (and it's helper) leaves dev.c and if_ltalk.h empty;
remove them and the Makefile entry.

tun.c was including that if_ltalk.h but actually wanted
the uapi version for LTALK_ALEN, fix up the path.

Signed-off-by: Dr. David Alan Gilbert <[e-mail]>
Reviewed-by: Willem de Bruijn <[e-mail]>
Acked-by: Jason Wang <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/tun.c

···
 #include <linux/bpf_trace.h>
 #include <linux/mutex.h>
 #include <linux/ieee802154.h>
-#include <linux/if_ltalk.h>
+#include <uapi/linux/if_ltalk.h>
 #include <uapi/linux/if_fddi.h>
 #include <uapi/linux/if_hippi.h>
 #include <uapi/linux/if_fc.h>

include/linux/if_ltalk.h

···
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __LINUX_LTALK_H
-#define __LINUX_LTALK_H
-
-#include <uapi/linux/if_ltalk.h>
-
-extern struct net_device *alloc_ltalkdev(int sizeof_priv);
-#endif

net/appletalk/Makefile

···
 
 obj-$(CONFIG_ATALK) += appletalk.o
 
-appletalk-y			:= aarp.o ddp.o dev.o
+appletalk-y			:= aarp.o ddp.o
 appletalk-$(CONFIG_PROC_FS)	+= atalk_proc.o
 appletalk-$(CONFIG_SYSCTL)	+= sysctl_net_atalk.o

net/appletalk/dev.c

···
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Moved here from drivers/net/net_init.c, which is:
- *	Written 1993,1994,1995 by Donald Becker.
- */
-
-#include <linux/errno.h>
-#include <linux/module.h>
-#include <linux/netdevice.h>
-#include <linux/if_arp.h>
-#include <linux/if_ltalk.h>
-
-static void ltalk_setup(struct net_device *dev)
-{
-	/* Fill in the fields of the device structure with localtalk-generic values. */
-
-	dev->type		= ARPHRD_LOCALTLK;
-	dev->hard_header_len 	= LTALK_HLEN;
-	dev->mtu		= LTALK_MTU;
-	dev->addr_len		= LTALK_ALEN;
-	dev->tx_queue_len	= 10;
-
-	dev->broadcast[0]	= 0xFF;
-
-	dev->flags		= IFF_BROADCAST|IFF_MULTICAST|IFF_NOARP;
-}
-
-/**
- * alloc_ltalkdev - Allocates and sets up an localtalk device
- * @sizeof_priv: Size of additional driver-private structure to be allocated
- *	for this localtalk device
- *
- * Fill in the fields of the device structure with localtalk-generic
- * values. Basically does everything except registering the device.
- *
- * Constructs a new net device, complete with a private data area of
- * size @sizeof_priv.  A 32-byte (not bit) alignment is enforced for
- * this private data area.
- */
-
-struct net_device *alloc_ltalkdev(int sizeof_priv)
-{
-	return alloc_netdev(sizeof_priv, "lt%d", NET_NAME_UNKNOWN,
-			    ltalk_setup);
-}
-EXPORT_SYMBOL(alloc_ltalkdev);