Disable previous stable link

Author: thijskh

website/download.shtml

@@ -19,9 +19,11 @@ dated <!--#echo var="dj_rc_branch_date" -->.</p>
   <div class="col-sm">
     <a class="btn btn-primary btn-lg" href="/releases/domjudge-<!--#echo var="dj_current_branch_version"-->.tar.gz"><i class="fas fa-download"></i> current stable</a>
   </div>
+<!--
   <div class="col-sm">
       <a class="btn btn-secondary btn-lg" href="/releases/domjudge-<!--#echo var="dj_previous_branch_version"-->.tar.gz"><i class="fas fa-download"></i> previous stable</a>
   </div>
+-->
 <!--
   <div class="col-sm">
       <a class="btn btn-danger btn-lg" href="/releases/domjudge-<!--#echo var="dj_rc_branch_version"-->.tar.gz"><i class="fas fa-download"></i> release candidate</a>