Refactor to remove issuer (#1443)

Author: gcatanese

src/test/java/com/adyen/CheckoutTest.java

@@ -93,7 +93,6 @@ public void TestDeserializePaymentRequestIdeal() throws Exception {
 
         // paymentMethod
         assertEquals(IdealDetails.TypeEnum.IDEAL, parsedCheckoutPaymentRequest.getPaymentMethod().getIdealDetails().getType());
-        assertEquals("issuerName", parsedCheckoutPaymentRequest.getPaymentMethod().getIdealDetails().getIssuer());
         // amount
         assertEquals(1000L, parsedCheckoutPaymentRequest.getAmount().getValue().longValue());
         assertEquals("EUR", parsedCheckoutPaymentRequest.getAmount().getCurrency());

src/test/resources/mocks/checkout/paymentRequestIdeal.json

@@ -5,7 +5,6 @@
   },
   "merchantAccount":"myMerchantAccount",
   "paymentMethod":{
-    "issuer":"issuerName",
     "type":"ideal"
   },
   "reference":"merchantReference",