tcp: Remove inet_hashinfo2_free_mod()

DCCP was removed, inet_hashinfo2_free_mod() is unused now.

Signed-off-by: Yue Haibing <[email protected]>
Reviewed-by: Kuniyuki Iwashima <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: Yue Haibing

include/net/inet_hashtables.h

@@ -202,12 +202,6 @@ static inline spinlock_t *inet_ehash_lockp(
 
 int inet_ehash_locks_alloc(struct inet_hashinfo *hashinfo);
 
-static inline void inet_hashinfo2_free_mod(struct inet_hashinfo *h)
-{
-	kfree(h->lhash2);
-	h->lhash2 = NULL;
-}
-
 static inline void inet_ehash_locks_free(struct inet_hashinfo *hashinfo)
 {
 	kvfree(hashinfo->ehash_locks);