title: How to uninstall minitest from Rails
body: <p>I'm using Ruby 2.2.0p0, and Rails 4.2.0. The Rails application is currently defaulting to using minitest, even though there's no testing gems mentioned in the Gemfile. For example, I have <code>rake test</code> in my rake tasks, and a <code>test</code> folder.</p>
  
  <p>I can see how to install RSpec-rails. But what, if anything, do I need to do to uninstall minitest?</p>
  
  <p>The only thing the RSpec-Rails <a href="https://github.com/rspec/rspec-rails" rel="noreferrer">README</a> has is</p>
  
  <blockquote>
    <p>Once installed, RSpec will generate spec files instead of Test::Unit
    test files when commands like rails generate model and rails generate
    controller are used.</p>
  </blockquote>