trap-manager: Remove reqid parameter from install() and change return type

Reqids for the same traffic selectors are now stable so we don't have to
pass reqids of previously installed CHILD_SAs.  Likewise, we don't need
to know the reqid of the newly installed trap policy as we now uninstall
by name.

src/libcharon/sa/ikev1/tasks/quick_delete.c

@@ -154,7 +154,7 @@ static bool delete_child(private_quick_delete_t *this, protocol_id_t protocol,
 				case ACTION_ROUTE:
 					charon->traps->install(charon->traps,
 									this->ike_sa->get_peer_cfg(this->ike_sa),
-									child_cfg, child_sa->get_reqid(child_sa));
+									child_cfg);
 					break;
 				default:
 					break;