Useless return (#2521)

wagtail/wagtailforms/forms.py

@@ -8,7 +8,7 @@ import django.forms
 class BaseForm(django.forms.Form):
     def __init__(self, *args, **kwargs):
         kwargs.setdefault('label_suffix', '')
-        return super(BaseForm, self).__init__(*args, **kwargs)
+        super(BaseForm, self).__init__(*args, **kwargs)
 
 
 class FormBuilder(object):