neighbour: remove neigh_parms_destroy()

neigh_parms_destroy() is a simple kfree(), no need for
a forward declaration.

neigh_parms_put() can instead call kfree() directly.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250203151152.3163876-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: edumazet

net/core/neighbour.c

@@ -832,12 +832,10 @@ static int pneigh_ifdown_and_unlock(struct neigh_table *tbl,
 	return -ENOENT;
 }
 
-static void neigh_parms_destroy(struct neigh_parms *parms);
-
 static inline void neigh_parms_put(struct neigh_parms *parms)
 {
 	if (refcount_dec_and_test(&parms->refcnt))
-		neigh_parms_destroy(parms);
+		kfree(parms);
 }
 
 /*
@@ -1713,11 +1711,6 @@ void neigh_parms_release(struct neigh_table *tbl, struct neigh_parms *parms)
 }
 EXPORT_SYMBOL(neigh_parms_release);
 
-static void neigh_parms_destroy(struct neigh_parms *parms)
-{
-	kfree(parms);
-}
-
 static struct lock_class_key neigh_table_proxy_queue_class;
 
 static struct neigh_table __rcu *neigh_tables[NEIGH_NR_TABLES] __read_mostly;