Remove PaymentResponse.totalAmount according to latest spec

chrome/test/data/android/payments/dynamic_shipping.js

 /*
  * Copyright 2016 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 /* global PaymentRequest:false */
 /* global toDictionary:false */
 
 /**
@@ skipping 15 matching lines @@
       evt.updateWith(new Promise(function(resolve) {
         resolve(updateDetails(details, request.shippingAddress));
       }));
     });
 
     request.show()
         .then(function(resp) {
           resp.complete('success')
               .then(function() {
                 print(
-                    JSON.stringify(resp.totalAmount, undefined, 2) + '<br>' +
                     resp.shippingOption + '<br>' +
                     JSON.stringify(
                         toDictionary(resp.shippingAddress), undefined, 2) +
                     '<br>' + resp.methodName + '<br>' +
                     JSON.stringify(resp.details, undefined, 2));
               })
               .catch(function(error) {
                 print(error.message);
               });
         })
@@ skipping 34 matching lines @@
       details.displayItems.splice(0, 0, shippingOption);
     } else {
       details.displayItems.splice(0, 1, shippingOption);
     }
     details.shippingOptions = [shippingOption];
   } else {
     delete details.shippingOptions;
   }
   return details;
 }