ENGCOM-5011: graphQl-640: fixed input type declaration for PaymentMet…

…hodAdditional… #648

 - Merge Pull Request magento/graphql-ce#648 from magento/graphql-ce:graphQl-640-remove-braces-from-empty-types
 - Merged commits:
   1. 8a65e48
   2. 0959569

app/code/Magento/QuoteGraphQl/etc/schema.graphqls

@@ -130,13 +130,9 @@ input SetPaymentMethodOnCartInput {
 
 input PaymentMethodInput {
     code: String! @doc(description:"Payment method code")
-    additional_data: PaymentMethodAdditionalDataInput @doc(description:"Additional payment data")
     purchase_order_number: String @doc(description:"Purchase order number")
 }
 
-input PaymentMethodAdditionalDataInput {
-}
-
 input SetGuestEmailOnCartInput {
     cart_id: String!
     email: String!
@@ -258,13 +254,9 @@ type AvailablePaymentMethod {
 type SelectedPaymentMethod {
     code: String! @doc(description: "The payment method code")
     title: String! @doc(description: "The payment method title.")
-    additional_data: SelectedPaymentMethodAdditionalData @doc(description: "Additional payment data")
     purchase_order_number: String @doc(description: "The purchase order number.")
 }
 
-type SelectedPaymentMethodAdditionalData {
-}
-
 type AppliedCoupon {
     code: String!
 }