Fix all E303 pep8 errors.

openedx/core/djangoapps/content/block_structure/apps.py

@@ -3,7 +3,6 @@ Configuration for block_structure djangoapp
 """
 
 
-
 from django.apps import AppConfig
 
 

openedx/core/djangoapps/content/block_structure/models.py

@@ -3,7 +3,6 @@ Models used by the block structure framework.
 """
 
 
-
 import errno
 from contextlib import contextmanager
 from datetime import datetime

openedx/core/djangoapps/content/block_structure/tests/test_tasks.py

@@ -3,7 +3,6 @@ Unit tests for the Course Blocks tasks
 """
 
 
-
 from mock import patch
 
 from xmodule.modulestore.tests.django_utils import ModuleStoreTestCase

openedx/core/djangoapps/content/block_structure/tests/test_transformer_registry.py

@@ -3,7 +3,6 @@ Tests for transformer_registry.py
 """
 
 
-
 from unittest import TestCase
 
 import ddt

openedx/core/djangoapps/content/course_overviews/management/commands/generate_course_overview.py

@@ -3,7 +3,6 @@ Command to load course overviews.
 """
 
 
-
 import logging
 
 import six