Tidy up flake8 errore

opentech/apply/blocks.py

@@ -2,7 +2,7 @@ from django import forms
 from django.utils.functional import cached_property
 from django.utils.translation import ugettext_lazy as _
 
-from wagtail.wagtailcore.blocks import BooleanBlock, ChooserBlock, StreamBlock, StructBlock, StaticBlock
+from wagtail.wagtailcore.blocks import BooleanBlock, ChooserBlock
 from wagtail.wagtailcore.utils import resolve_model_string
 
 from opentech.stream_forms.blocks import FormFieldBlock, FormFieldsBlock

opentech/apply/forms.py

@@ -23,7 +23,6 @@ class WorkflowFormAdminForm(WagtailAdminPageForm):
             number_of_stages = len(workflow.stage_classes)
             plural_stage = 's' if number_of_stages > 1 else ''
 
-
             if number_of_forms != number_of_stages:
                 self.add_error(
                     None,