timer_delete
int timer_delete(timer_t);
__weak_reference(__timer_delete, timer_delete);
extern int timer_delete(struct timer_list *);
return (timer_delete(tl));
.timer_delete = realtimer_delete,
CLOCK_CALL(it->it_clockid, timer_delete, (it));
CLOCK_CALL(it->it_clockid, timer_delete, (it));
int (*timer_delete)(struct itimer * timer);
ATF_REQUIRE(timer_delete(timer) == 0);