Remove the button that enables user to split an order between stock locations

There's only one stock location in OFN so this feature is not useful at this point

app/assets/javascripts/admin/orders/controllers/order_controller.js.coffee

@@ -24,3 +24,7 @@ angular.module("admin.orders").controller "orderCtrl", ($scope, shops, orderCycl
 
   for shop in $scope.shops
     shop.disabled = !$scope.distributorHasOrderCycles(shop)
+
+  # Hides the split button introduced by spree in the order form
+  #   We only have one stock location in OFN so it's meaningless to split the order between stock locations
+  $('.split-item').hide()

spec/features/admin/orders_spec.rb

@@ -285,6 +285,11 @@ feature %q{
         end
       end
 
+      scenario "cannot split the order in different stock locations" do
+        # There's only 1 stock location in OFN, so the split functionality that comes with spree should be hidden
+        expect(page).to_not have_selector '.split-item'
+      end
+
       scenario "can edit shipping method" do
         expect(page).to_not have_content different_shipping_method.name