removed back to current draft link as that's now unnecessary

wagtail/wagtailadmin/templates/wagtailadmin/pages/revisions/index.html

@@ -8,8 +8,6 @@
     {% include "wagtailadmin/shared/header.html" with title=revisions_str subtitle=page.title icon="doc-empty-inverse" %}
 
     <div class="nice-padding">
-        <p>Back to current draft</p>
-
         <div id="revision-results" class="revisions">
             {% include "wagtailadmin/pages/revisions/results.html" %}
         </div>