pagekite: Drop ineffective base template

The base template simply tries to override the description and formats its
differently. However, since the introduction of app-header.html, this was
ineffective and did nothing because blocks from included templates can't be
overridden, apparently.

Also, the base template is being used only in template as all other templates
either don't use it or have been removed since.

Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: Veiko Aasa <veiko17@disroot.org>

plinth/modules/pagekite/templates/pagekite_base.html

@@ -1,18 +0,0 @@
-{% extends "app.html" %}
-{% comment %}
-# SPDX-License-Identifier: AGPL-3.0-or-later
-{% endcomment %}
-
-{% block description %}
-
-  <p>{{ description.0|safe }}</p>
-
-  <ul>
-    {% for paragraph in description|slice:"1:6" %}
-      <li>{{ paragraph|safe }}</li>
-    {% endfor %}
-  </ul>
-
-  <p>{{ description|last|safe }}</p>
-
-{% endblock %}

plinth/modules/pagekite/templates/pagekite_configure.html

@@ -1,4 +1,4 @@
-{% extends "pagekite_base.html" %}
+{% extends "app.html" %}
 {% comment %}
 # SPDX-License-Identifier: AGPL-3.0-or-later
 {% endcomment %}