net: remove references to CONFIG_IRDA in network header files

Commit d64c2a76 ("staging: irda: remove the irda network stack and
drivers") removes the config IRDA.

Remove the remaining references to this non-existing config in the network
header files.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Link: https://lore.kernel.org/r/20211229113620.19368-1-lukas.bulwahn@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

include/linux/atalk.h

@@ -113,7 +113,7 @@ extern int aarp_proto_init(void);
 /* Inter module exports */
 
 /* Give a device find its atif control structure */
-#if IS_ENABLED(CONFIG_IRDA) || IS_ENABLED(CONFIG_ATALK)
+#if IS_ENABLED(CONFIG_ATALK)
 static inline struct atalk_iface *atalk_find_dev(struct net_device *dev)
 {
 	return dev->atalk_ptr;

include/linux/netdevice.h

@@ -2098,7 +2098,7 @@ struct net_device {
 #if IS_ENABLED(CONFIG_TIPC)
 	struct tipc_bearer __rcu *tipc_ptr;
 #endif
-#if IS_ENABLED(CONFIG_IRDA) || IS_ENABLED(CONFIG_ATALK)
+#if IS_ENABLED(CONFIG_ATALK)
 	void 			*atalk_ptr;
 #endif
 	struct in_device __rcu	*ip_ptr;