  from datetime import datetime
  
  from django.db.backends.utils import strip_quotes
  from django.db.transaction import TransactionManagementError, atomic
  from django.utils import six, timezone
  from django.utils.encoding import force_bytes
  
  logger = logging.getLogger('django.db.backends.schema')
  
  
 
</s> remove from django.utils import six, timezone
 </s> add from django.utils import timezone </s> remove from django.utils import six, timezone
 </s> add from django.utils import timezone </s> remove from django.utils import six, timezone
 </s> add from django.utils import timezone </s> remove from django.utils import html, six, text
 </s> add from django.utils import html, text </s> remove from django.utils import six, timezone
 </s> add from django.utils import timezone
from django.utils import timezone
  from datetime import datetime
  
  from django.db.backends.utils import strip_quotes
  from django.db.transaction import TransactionManagementError, atomic
from django.utils import timezone
  from django.utils.encoding import force_bytes
  
  logger = logging.getLogger('django.db.backends.schema')
  
  
keep keep keep keep replace keep keep keep keep keep
 Refs #23919 -- Removed six.<various>_types usage

Thanks Tim Graham and Simon Charette for the reviews. 
django/db/backends/base/schema.py