JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/ui-lightness/jquery-ui.css">
<ul>
    <li class="rss-item">
      <a class="rss-item" href="http://myblog.com/post-title">Post Title</a>
      <br>
      http://myblog.com/post-title/Post Title <!-- this line I want to remove -->
      <div class="thumbnail">
        <a href="#">
        <img src="thumbnail.jpg">
        </a>
      </div>
      <div class="excerpt">Excerpt text</div>
      <a href="http://myblog.com/post-title">Continue reading...</a>
    </li>
</ul>

JavaScript

var tn = $('a.rss-item[href="http://myblog.com/post-title"] + br')[0].nextSibling;

tn.parentNode.removeChild( tn );