Delete redundant discount data from order_rows (#466)

* Delete redundant discount data from order_rows

* Bump revision prior release

migrations/000.540.sql

@@ -0,0 +1,11 @@
+UPDATE order_rows
+   SET data = data
+        - 'discount_amount'
+        - 'discountType'
+        - 'discountValue'
+ WHERE id IN (
+    SELECT id
+    FROM order_rows
+    WHERE NOT data->>'reprinted_order_row_id' IS NULL
+    AND NOT data->>'discount_amount' IS NULL
+ );