Revert "Fix package output for now."

With better formatting of domain output, separation by heading is redundant.
Also, secondary header for page title might not be necessary with correct domain
output of package objects.

autoapi/templates/go/package.rst

@@ -21,21 +21,10 @@
 {% endif %}
 
 {% block content %}
-
-
-
-
-{%- for item_type in obj.item_map.keys() %}
-
-{{ item_type.title() }}
-{{ "-" * item_type.title()|length }}
-
-{%- for obj_item in obj.item_map.get(item_type, []) %}
+{%- for obj_item in obj.children %}
 
 {% macro render() %}{{ obj_item.render() }}{% endmacro %}
 {{ render()|indent(0) }}
 
 {%- endfor %}
-{%- endfor %}
-
 {% endblock %}