Remove spree checkout controller spec, it is no longer necessary

spec/controllers/spree/checkout_controller_spec.rb

@@ -1,19 +0,0 @@
-require 'spec_helper'
-require 'support/request/authentication_workflow'
-
-describe Spree::CheckoutController, type: :controller do
-  context 'rendering edit from within spree for the current checkout state' do
-    let(:order) { controller.current_order(true) }
-    let(:user) { create(:user) }
-
-    before do
-      create(:line_item, order: order)
-
-      allow(controller).to receive(:spree_current_user) { user }
-    end
-
-    it "redirects to the OFN checkout page" do
-      expect(spree_get(:edit)).to redirect_to checkout_path
-    end
-  end
-end