only suggest local users as potential group members

bookwyrm/templates/snippets/add_to_group_button.html

@@ -11,7 +11,6 @@
             {% csrf_token %}
             <input type="hidden" name="group" value="{{ group.id }}">
             <input type="hidden" name="user" value="{{ user.username }}">
-            {% if user.local %}
             <button class="button is-small{% if not minimal %} is-link{% endif %}" type="submit">
                 {% if show_username %}
                 {% blocktrans with username=user.localname %}Invite @{{ username }}{% endblocktrans %}
@@ -19,10 +18,6 @@
                 {% trans "Invite" %}
                 {% endif %}
             </button>
-            {% else %}
-            <!-- TODO: This is an incredibly ugly hack until groups are AP enabled -->
-            <span><em>Remote User</em></span>
-            {% endif %}
         </form>
         <form action="{% url 'remove-group-member' %}" method="POST" class="interaction add_{{ user.id }} {% if not group|is_member:user and not group|is_invited:user %}is-hidden{% endif %}" data-id="add_{{ user.id }}">
             {% csrf_token %}