[css-text-3] Remove duplicated section

Author: frivoal

css-text-3/Overview.bs

@@ -4238,17 +4238,3 @@ Changes</h2>
     <li>Added ''line-break: anywhere'' and ''overflow-wrap: anywhere''.
     <li>Tweaked handling of Ambiguous characters during <a href="#line-break-transform">segment break transformation</a> to respond to language context.
   </ul>
-
-  <h3 class="no-num" id="changes-2013">
-  Changes from the <a href="https://www.w3.org/TR/2013/WD-css-text-3-20131010/">October
-  2013 CSS3 Text <abbr title="Working Draft">LCWD</abbr></a></h3>
-
-  <p>Major changes include:
-  <ul>
-    <li>
-  </ul>
-
-  <p>Significant details updated:
-  <ul>
-    <li>
-  </ul>