Remove the fact ToS file

Now that we check if there is a ToS file before displaying the banner
it's not needed anymore

spec/system_helper.rb

@@ -2,12 +2,5 @@
 
 require "base_spec_helper"
 
-RSpec.configure do |config|
-  # Set up a fake ToS file
-  config.before(:each, type: :system) do
-    allow(TermsOfServiceFile).to receive(:updated_at).and_return(2.hours.ago)
-  end
-end
-
 # system/support/ files contain system tests configurations and helpers
 Dir[File.join(__dir__, "system/support/**/*.rb")].sort.each { |file| require file }