events: drop useless comment

src/knot/zone/events.c

@@ -684,7 +684,7 @@ static void replan_dnssec(zone_t *zone)
 
 static bool valid_event(zone_event_type_t type)
 {
-	return (type >= ZONE_EVENT_RELOAD && type < ZONE_EVENT_COUNT);
+	return (type > ZONE_EVENT_INVALID && type < ZONE_EVENT_COUNT);
 }
 
 /*! \brief Return remaining time to planned event (seconds). */

src/knot/zone/events.h

@@ -32,7 +32,7 @@ struct server_t;
 typedef enum zone_event_type {
 	ZONE_EVENT_INVALID = -1,
 	// supported event types
-	ZONE_EVENT_RELOAD = 0, // Used as a first valid event, do not change.
+	ZONE_EVENT_RELOAD = 0,
 	ZONE_EVENT_REFRESH,
 	ZONE_EVENT_XFER,
 	ZONE_EVENT_UPDATE,