more cleanup

cmd/checkout/pool-server.go

@@ -156,26 +156,6 @@ func (s *CheckoutPoolServer) CheckoutHandler(fn func(order *CheckoutOrder, w htt
 	}))
 }
 
-func (s *CheckoutPoolServer) getCartGrain(ctx context.Context, cartId cart.CartId, version int) (*cart.CartGrain, error) {
-	// Call cart service to get grain
-	url := fmt.Sprintf("%s/internal/cart/%s/%d", s.cartClient.baseUrl, cartId.String(), version)
-	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
-	if err != nil {
-		return nil, err
-	}
-	resp, err := s.cartClient.httpClient.Do(req)
-	if err != nil {
-		return nil, err
-	}
-	defer resp.Body.Close()
-	if resp.StatusCode != http.StatusOK {
-		return nil, fmt.Errorf("failed to get cart: %s", resp.Status)
-	}
-	var grain cart.CartGrain
-	err = json.NewDecoder(resp.Body).Decode(&grain)
-	return &grain, err
-}
-
 func CheckoutIdHandler(fn func(checkoutId checkout.CheckoutId, w http.ResponseWriter, r *http.Request) error) func(w http.ResponseWriter, r *http.Request) {
 	return func(w http.ResponseWriter, r *http.Request) {
 		var id checkout.CheckoutId