Remove django-sendfile from requirements and test settings

requirements-dev.txt

@@ -3,7 +3,6 @@ mock>=1.0.0
 python-dateutil>=2.2
 pytz>=2014.7
 Pillow>=2.7.0
-django-sendfile==0.3.6
 
 # For coverage and PEP8 linting
 coverage>=3.7.0

wagtail/tests/settings.py

@@ -83,7 +83,6 @@ INSTALLED_APPS = (
 
     'taggit',
     'compressor',
-    'sendfile',
 
     'wagtail.wagtailcore',
     'wagtail.wagtailadmin',
@@ -114,8 +113,6 @@ INSTALLED_APPS = (
 )
 
 
-
-
 # Using DatabaseCache to make sure that the cache is cleared between tests.
 # This prevents false-positives in some wagtail core tests where we are
 # changing the 'wagtail_root_paths' key which may cause future tests to fail.