Merge pull request #3496 from luisramos0/2-0-kill-allow-backorders

[Spree Upgrade] Remove allow_backorders from product stock verification

app/helpers/add_to_cart_helper.rb

@@ -1,8 +1,4 @@
 module AddToCartHelper
-  def product_out_of_stock
-    !@product.has_stock? && !Spree::Config[:allow_backorders]
-  end
-
   def distributor_available_for?(order, product)
     DistributionChangeValidator.new(order).distributor_available_for?(product)
   end

app/views/spree/products/_add_to_cart.html.haml

@@ -1,7 +1,7 @@
 .add-to-cart
   - order = current_order(false)
 
-  - if product_out_of_stock
+  - if !@product.has_stock?
     = content_tag('strong', t(:out_of_stock))
 
   - elsif !distributor_available_for?(order, @product)