Remove old configuration template

templates/instance/configure.html.tera

@@ -1,15 +0,0 @@
-{% extends "base" %}
-
-{% block title %}
-{{ "Configuration" | _ }}
-{% endblock title %}
-
-{% block content %}
-<h1>{{ "Configure your instance" | _ }}</h1>
-<form method="post">
-    <label for="name">{{ "Name" | _ }}</label>
-    <input type="text" id="name" name="name" />
-
-    <input type="submit" value="{{ "Let's go!" | _ }}" />
-</form>
-{% endblock content %}