Revert "Set base_total_value and total_value on DiscountSet event"

This reverts commit 6bb3136.

Author: lukaszreszke

ecommerce/pricing/lib/pricing/offer.rb

@@ -51,9 +51,7 @@ def apply_discount(discount)
         data: {
           order_id: @id,
           type: discount.type,
-          amount: discount.value,
-          base_total_value: @list.base_sum,
-          total_value: @list.actual_sum - @list.actual_sum * (discount.value / 100)
+          amount: discount.value
         }
       )
     end

ecommerce/pricing/test/three_plus_one_test.rb

@@ -260,9 +260,7 @@ def test_given_3_plus_one__when_10_percent_discount_for_offer__then_offer_price_
           data: {
             order_id: order_id,
             type: Discounts::GENERAL_DISCOUNT,
-            amount: 10,
-            base_total_value: 80,
-            total_value: 54
+            amount: 10
           }
         ),
         OrderTotalValueCalculated.new(