title: use the_posts_pagination(); without title
body: <p>When using the_posts_pagination (<a href="http://codex.wordpress.org/Function_Reference/the_posts_pagination" rel="noreferrer">see codex</a>) the pagination displays a title "post navigation". </p>
  
  <p>Is it possible to turn this off?</p>
  
  <p>For example using something like:</p>
  
  <pre><code>the_posts_pagination( array(
      'title'              =&gt; '', // this should hide the title
      'prev_text'          =&gt; __( 'Previous', 'twentyfifteen' ),
      'next_text'          =&gt; __( 'Next', 'twentyfifteen' ),
      'before_page_number' =&gt; '&lt;span class="meta-nav screen-reader-text"&gt;' . __( '', 'nieuwedruk' ) . ' &lt;/span&gt;',
  ) );
  </code></pre>