dashboard: remove unused renew template

circle/dashboard/templates/dashboard/confirm/base-renew.html

-{% extends "dashboard/base.html" %}
-{% load i18n %}
-
-{% block content %}
-  <div class="body-content">
-    <div class="panel panel-default">
-      <div class="panel-heading">
-        <h3 class="no-margin">
-          {%blocktrans with instance=instance.name%}
-          Renewing <em>{{instance}}</em>
-          {%endblocktrans%}
-        </h3>
-      </div>
-      <div class="panel-body">
-        {%blocktrans with object=instance.name%}
-            Do you want to renew <strong>{{ object }}</strong>?
-        {%endblocktrans%}
-        {%blocktrans with suspend=time_of_suspend delete=time_of_delete|default:"n/a" %}
-            The instance will be suspended at <em>{{suspend}}</em>
-            and removed at <em>{{delete}}</em> if you renew it now.
-        {%endblocktrans%}
-        <div class="pull-right">
-          <form action="" method="POST">
-            {% csrf_token %}
-            <a class="btn btn-default"
-                href="{{instance.get_absolute_path}}">{% trans "Back" %}</a>
-            <button class="btn btn-danger">{% trans "Renew" %}</button>
-          </form>
-        </div>
-      </div>
-  </div>
-{% endblock %}