chore(victorops): remove unused code

pkg/services/alerting/notifiers/victorops.go

@@ -27,12 +27,9 @@ func NewVictoropsNotifier(model *models.AlertNotification) (alerting.Notifier, e
 		return nil, alerting.ValidationError{Reason: "Could not find victorops url property in settings"}
 	}
 
-	alertOnExecError := model.Settings.Get("alertOnExecError").MustBool()
-
 	return &VictoropsNotifier{
 		NotifierBase: NewNotifierBase(model.Id, model.IsDefault, model.Name, model.Type, model.Settings),
 		URL:          url,
-		AlertOnExecError: alertOnExecError,
 		log:          log.New("alerting.notifier.victorops"),
 	}, nil
 }
@@ -43,7 +40,6 @@ func NewVictoropsNotifier(model *models.AlertNotification) (alerting.Notifier, e
 type VictoropsNotifier struct {
 	NotifierBase
 	URL string
-	AlertOnExecError bool
 	log log.Logger
 }