Delete redundant spec, this case is now covered in a view spec

spec/features/admin/orders_spec.rb

@@ -145,17 +145,6 @@ feature '
     expect(page).to have_selector 'p', text: "Order cycle: #{@order.order_cycle.name}"
   end
 
-  scenario "can't print invoices when invocies are disabled" do
-    original_invoices_setting = Spree::Config[:enable_invoices?]
-
-    Spree::Config[:enable_invoices?] = false
-    quick_login_as_admin
-    visit '/admin/orders'
-    expect(page).to have_no_selector 'button.invoices-modal'
-
-    Spree::Config[:enable_invoices?] = original_invoices_setting
-  end
-
   scenario "filling customer details" do
     # Given a customer with an order, which includes their shipping and billing address