If you have the table created in the database, you can run
python manage.py migrate --fake <appname>
Mark migrations as run without actually running them
Or if you want to avoid some actions in your migration, you can edit the migration file under the app/migrations directory and comment the operations you don’t want to do in the migrate execution.
Docs: https://docs.djangoproject.com/en/1.8/topics/migrations/#upgrading-from-south
or python manage.py help migrate