chore(settings): remove unused STATIC_URL from settings

https://docs.djangoproject.com/en/1.9/ref/settings/#static-url

Author: helgi

rootfs/deis/settings.py

@@ -54,10 +54,6 @@
 # If you set this to False, Django will not use timezone-aware datetimes.
 USE_TZ = True
 
-# Static files (CSS, JavaScript, Images)
-# https://docs.djangoproject.com/en/1.9/howto/static-files/
-STATIC_URL = '/static/'
-
 # Manage templates
 TEMPLATES = [
     {