title: Remove composer
body: <p>I installed composer while trying to install cakePhp, but the installation was not successful and I want to uninstall composer. 
  I am not finding any way to do this.</p>
  
  <p>For the installation I used the command <code>curl -s https://getcomposer.org/installer | php</code></p>
  
  <p>I am working in linux</p>