Merge pull request #7 from nhsuk/remove-extract-dict

Fix changes to upstream factoryboy

Author: Mike Monteith

src/wagtail_factories/factories.py

@@ -1,6 +1,5 @@
 import factory
 from django.utils.text import slugify
-from factory.utils import extract_dict
 
 try:
     from wagtail.wagtailcore.models import Collection, Page, Site