Remove unused fields, remove refund status (#40)

src/main/proto/com/kodypay/grpc/pay/v1/pay.proto

@@ -73,23 +73,19 @@ message RefundRequest {
   string store_id = 1; // UUID of store
   string order_id = 2;
   string amount = 3; // amount in BigDecimal/2.dp (0.00)
-  optional bool print_merchant_receipt = 4;
-  optional bool print_shopper_receipt = 5;
 }
 message RefundResponse {
   RefundStatus status = 1;
   optional string failure_reason = 2; // only populated on failure
-  optional string receipt_json = 3; // json blob containing the receipt data
-  string order_id = 4;
-  google.protobuf.Timestamp date_created = 5;
-  string total_paid_amount = 6;
-  string total_amount_refunded = 7;
-  string remaining_amount = 8;
-  string total_amount_requested = 9;
+  string order_id = 3;
+  google.protobuf.Timestamp date_created = 4;
+  string total_paid_amount = 5;
+  string total_amount_refunded = 6;
+  string remaining_amount = 7;
+  string total_amount_requested = 8;
   enum RefundStatus {
     PENDING = 0;
     REQUESTED = 1;
     FAILED = 2;
-    REFUNDED = 3;
   }
 }