title: Guard + spork + Rspec issue - How do I remove hooks to Test::Unit?
body: <p>I have guard-spork running on my rails 3.2.11 project on Ubuntu 12.04.</p>
  
  <p>I got my configuration from <a href="http://ruby.railstutorial.org/chapters/static-pages#sec-guard" rel="noreferrer">railstutorial.org</a>.</p>
  
  <p>Spork starts, then guard says it can't find spork to start, waits 30 secs, then 60 secs, then works.</p>
  
  <p>It works, but starts up with an error everytime.  Just wondering if there is something I am doing wrong.</p>
  
  <p>How do I remove hooks for Test::Unit?  </p>
  
  <p>Error Message:</p>
  
  <pre><code>16:31:58 - INFO - Starting Spork for RSpec, Test::Unit
  Using RSpec
  Preloading Rails environment
  Couldn't find a supported test framework that begins with 'testunit'
  
  Supported test frameworks:
  ( ) Cucumber
  (*) RSpec
  
  Legend: ( ) - not detected in project   (*) - detected
  Loading Spork.prefork block...
  Rack::File headers parameter replaces cache_control after Rack 1.5.
  Spork is ready and listening on 8989!
  16:32:28 - ERROR - Could not start Spork server for RSpec, Test::Unit after 30 seconds. I will continue waiting for a further 60 seconds.
  
  16:33:28 - ERROR - Could not start Spork server for RSpec, Test::Unit. Make sure you can use it manually first.
  </code></pre>