disabled timeout detection for RSpec tests

spec/rails_helper.rb

@@ -1,5 +1,3 @@
-MAXIMUM_EXECUTION_TIME = 15
-
 # This file is copied to spec/ when you run 'rails generate rspec:install'
 ENV["RAILS_ENV"] ||= 'test'
 require 'spec_helper'
@@ -21,10 +19,6 @@ Dir[Rails.root.join("spec/support/**/*.rb")].each { |f| require f }
 ActiveRecord::Migration.maintain_test_schema!
 
 RSpec.configure do |config|
-  config.around(:each) do |example|
-    Timeout::timeout(example.metadata[:permitted_execution_time] || MAXIMUM_EXECUTION_TIME) { example.run }
-  end
-
   # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
   config.fixture_path = "#{::Rails.root}/spec/fixtures"