fix flake8

backend/metagenedb/api/catalog/views/test_gene.py

-from django.contrib.auth.models import User
 from django.test import TestCase
 from django.urls import reverse
 from rest_framework import status
 from rest_framework.test import APITestCase
-from rest_framework_jwt.settings import api_settings
 
 from metagenedb.apps.catalog.factory import GeneFactory, TaxonomyFactory
 from metagenedb.common.utils.mocks.metagenedb import MetageneDBCatalogGeneAPIMock