api/plan.go
func removePlan(w http.ResponseWriter, r *http.Request, t auth.Token) (err error) {
	allowed := permission.Check(t, permission.PermPlanDelete)
	if !allowed {
		return permission.ErrUnauthorized
	}
	planName := r.URL.Query().Get(":planname")
	evt, err := event.New(&event.Opts{
		Target:     event.Target{Type: event.TargetTypePlan, Value: planName},
		Kind:       permission.PermPlanDelete,
		Owner:      t,
		CustomData: event.FormToCustomData(InputFields(r)),
		Allowed:    event.Allowed(permission.PermPlanReadEvents),
	})
	if err != nil {
		return err
	}
	defer func() { evt.Done(err) }()
	err = servicemanager.Plan.Remove(planName)
	if err == appTypes.ErrPlanNotFound {
		return &errors.HTTP{
			Code:    http.StatusNotFound,
			Message: err.Error(),
		}
	}
	return err
}
func removePlan(w http.ResponseWriter, r *http.Request, t auth.Token) (err error) {
	allowed := permission.Check(t, permission.PermPlanDelete)
	if !allowed {
		return permission.ErrUnauthorized
	}
	planName := r.URL.Query().Get(":planname")
	evt, err := event.New(&event.Opts{
		Target:     event.Target{Type: event.TargetTypePlan, Value: planName},
		Kind:       permission.PermPlanDelete,
		Owner:      t,
		CustomData: event.FormToCustomData(InputFields(r)),
		Allowed:    event.Allowed(permission.PermPlanReadEvents),
	})
	if err != nil {
		return err
	}
	defer func() { evt.Done(err) }()
	err = servicemanager.Plan.Remove(planName)
	if err == appTypes.ErrPlanNotFound {
		return &errors.HTTP{
			Code:    http.StatusNotFound,
			Message: err.Error(),
		}
	}
	return err
}
// title: remove plan
// path: /plans/{name}
// method: DELETE
// responses:
//   200: Plan removed
//   401: Unauthorized
//   404: Plan not found