title: Rails: How can I remove default version of bundler?
body: <p>I tried to change default bundle version but it getting updated with 2 default version. How can I modify to single default?</p>
  
  <pre><code>$ gem list bundler
  
  *** LOCAL GEMS ***
  
  bundler (2.0.1, default: 1.16.6, default: 1.16.2)
  </code></pre>
  
  <p>If I do gem uninstall not removing defaults,</p>
  
  <pre><code>$ gem uninstall bundler
  Successfully uninstalled bundler-2.0.1
  
  
  $ gem list bundle
  
  *** LOCAL GEMS ***
  
  bundler (default: 1.16.6, default: 1.16.2)
  </code></pre>
  
  <p>How can I set (like the below) default as single version?</p>
  
  <pre><code>bundler (2.0.1, default: 1.16.6)
  </code></pre>