Update to new version of celery (so djcelery is removed).

This seems to involve unsetting TEST_RUNNER. I'm not certain
this is correct; I'm asking on IRC.

kepi/kepi/__init__.py

@@ -0,0 +1,3 @@
+from .celery import app as celery_app
+
+__all__ = ('celery_app', )

kepi/kepi/celery.py

@@ -0,0 +1,13 @@
+import os
+
+from celery import Celery
+
+app = Celery('kepi')
+
+app.config_from_object('django.conf:settings', namespace='CELERY')
+
+app.autodiscover_tasks()
+
+@app.task(bind=True)
+def debug_task(self):
+    print(f'Request: {self.request!r}')

kepi/kepi/settings.py

@@ -1,7 +1,5 @@
 import os
-import djcelery
 import logging
-djcelery.setup_loader()
 
 logger = logging.Logger(name='kepi')
 
@@ -84,7 +82,6 @@ INSTALLED_APPS = (
         'django.contrib.messages',
         'django.contrib.staticfiles',
 
-        'djcelery',
         'django_celery_results',
 
         'rest_framework',
@@ -142,8 +139,6 @@ LOGGING = {
             },
         }
 
-TEST_RUNNER = 'djcelery.contrib.test_runner.CeleryTestSuiteRunner'
-
 TIME_ZONE = 'UTC'
 
 USE_I18N = True

requirements.txt

@@ -6,7 +6,6 @@ requests-http-signature
 cryptography
 pillow
 celery>4.0.0
-django-celery
 httpretty
 httpsig
 django-celery-results