This routine does not appear to be used anywhere.

Index: sys/netinet/ip_spd.c
===================================================================
RCS file: /OpenBSD/src/sys/netinet/ip_spd.c,v
diff -u -p -u -p -r1.122 ip_spd.c
--- sys/netinet/ip_spd.c	8 Jul 2025 00:47:41 -0000	1.122
+++ sys/netinet/ip_spd.c	20 Sep 2026 16:47:44 -0000
@@ -42,7 +42,6 @@ int	ipsp_acquire_sa(struct ipsec_policy 
 int	ipsp_pending_acquire(struct ipsec_policy *, union sockaddr_union *);
 void	ipsp_delete_acquire_timer(void *);
 void	ipsp_delete_acquire_locked(struct ipsec_acquire *);
-void	ipsp_delete_acquire(struct ipsec_acquire *);
 void	ipsp_unref_acquire_locked(struct ipsec_acquire *);
 
 struct pool ipsec_policy_pool;
@@ -718,14 +717,6 @@ ipsp_delete_acquire_timer(void *v)
 /*
  * Delete a pending IPsec acquire record.
  */
-void
-ipsp_delete_acquire(struct ipsec_acquire *ipa)
-{
-	mtx_enter(&ipsec_acquire_mtx);
-	ipsp_delete_acquire_locked(ipa);
-	mtx_leave(&ipsec_acquire_mtx);
-}
-
 void
 ipsp_delete_acquire_locked(struct ipsec_acquire *ipa)
 {