Remove code related to promotions

app/models/spree/order.rb

@@ -33,8 +33,6 @@ module Spree
 
     token_resource
 
-    attr_reader :coupon_code
-
     if Spree.user_class
       belongs_to :user, class_name: Spree.user_class.to_s
       belongs_to :created_by, class_name: Spree.user_class.to_s
@@ -461,7 +459,6 @@ module Spree
     def finalize!
       touch :completed_at
 
-      # lock all adjustments (coupon promotions, etc.)
       adjustments.update_all state: 'closed'
 
       # update payment and shipment(s) states, and save
@@ -605,24 +602,6 @@ module Spree
       end
     end
 
-    def coupon_code=(code)
-      @coupon_code = code.strip.downcase rescue nil
-    end
-
-    # Tells us if there if the specified promotion is already associated with the order
-    # regardless of whether or not its currently eligible. Useful because generally
-    # you would only want a promotion action to apply to order no more than once.
-    #
-    # Receives an adjustment +originator+ (here a PromotionAction object) and tells
-    # if the order has adjustments from that already
-    def promotion_credit_exists?(originator)
-      !! adjustments.includes(:originator).promotion.reload.detect { |credit| credit.originator.id == originator.id }
-    end
-
-    def promo_total
-      adjustments.eligible.promotion.map(&:amount).sum
-    end
-
     def shipped?
       %w(partial shipped).include?(shipment_state)
     end

spec/models/spree/order_spec.rb

@@ -504,22 +504,6 @@ describe Spree::Order do
     end
   end
 
-  context "promotion adjustments" do
-    let(:originator) { double("Originator", id: 1) }
-    let(:adjustment) { double("Adjustment", originator: originator) }
-
-    before { order.stub_chain(:adjustments, :includes, :promotion, reload: [adjustment]) }
-
-    context "order has an adjustment from given promo action" do
-      it { expect(order.promotion_credit_exists? originator).to be_true }
-    end
-
-    context "order has no adjustment from given promo action" do
-      before { originator.stub(id: 12) }
-      it { expect(order.promotion_credit_exists? originator).to be_true }
-    end
-  end
-
   context "payment required?" do
     let(:order) { Spree::Order.new }