title: Delete username from a Git repository
body: <p>I am getting this warning when I try to set my user name in <a href="http://www.git-tower.com/" rel="noreferrer">Tower</a>:</p>
  
  <blockquote>
    <p>warning: user.name has multiple values</p>
  </blockquote>
  
  <p>I have checked in a terminal window and found that I have three usernames:</p>
  
  <pre><code>macmini:HiBye shannoga$ git config --get-all user.name
  Shani
  shani
  shani
  </code></pre>
  
  <p>How can I delete two of the user names?</p>