title: Remove default "category" taxonomy from custom post type
body: <p>I've created a custom post type called <code>Resources</code>. I want this post type to support the following custom taxonomies:</p>
  
  <ul>
  <li>Subject</li>
  <li>Type</li>
  <li>Sector</li>
  </ul>
  
  <p>And I have registered the post type accordingly:</p>
  
  <pre><code>register_post_type(
      'resources',
      tp_build_post_args(
          'resources', 'Resource', 'Resources',
          array(
              'menu_icon'     =&gt; 'dashicons-welcome-write-blog',
              'menu_position' =&gt; 20,
              'has_archive'   =&gt; true,
              'public'      =&gt; true,
              'supports' =&gt; array('editor', 'title','author','thumbnail', 'revisions'),
              'taxonomies' =&gt; array('sector', 'subject', 'type')
              //'rewrite' =&gt; array ( 'slug' =&gt; 'resources', 'with_front' =&gt; false )
          )
      )
  );
  </code></pre>
  
  <p>And have defined the resources taxonomy like so:</p>
  
  <pre><code>register_taxonomy(  
      'resource', 
      'resources', 
      // 'labels'   =&gt; array(
      //     'name'          =&gt; 'Resource Categories',
      //     'singular_name' =&gt; 'Resource Category',
      // ),
      array(  
          'hierarchical' =&gt; true,  
          'query_var' =&gt; true,
      )  
  );  
  </code></pre>
  
  <p>And this outputs the following in WordPress backend:</p>
  
  <p><a href="https://i.stack.imgur.com/tkh8N.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/tkh8N.png" alt="enter image description here"></a></p>
  
  <p>I do not want the <code>categories</code> option, is there a way to remove this? I know if no label is defined for when running <code>register_taxonomy</code>, then "categories" is the default output. But I do not want a label to replace it, I don't want it (just want to see subject, type and sector).</p>
  
  <p>How can I go about this?</p>