Remove the custom wagtail admin user forms

opentech/apply/users/templates/wagtailusers/users/create.html

-{% extends "wagtailusers/users/create.html" %}
-
-{% block extra_fields %}
-    {% include "wagtailadmin/shared/field_as_li.html" with field=form.full_name %}
-{% endblock extra_fields %}

opentech/apply/users/templates/wagtailusers/users/edit.html

-{% extends "wagtailusers/users/edit.html" %}
-
-{% block extra_fields %}
-    {% include "wagtailadmin/shared/field_as_li.html" with field=form.full_name %}
-{% endblock extra_fields %}