removed coreapi import

seed/views/v3/columns.py

@@ -4,7 +4,6 @@
 :copyright (c) 2014 - 2020, The Regents of the University of California, through Lawrence Berkeley National Laboratory (subject to receipt of any required approvals from the U.S. Department of Energy) and contributors. All rights reserved.  # NOQA
 :author
 """
-import coreapi
 import logging
 from django.http import JsonResponse
 from rest_framework import status