Fix PEP issues

Author: rrooij

terminusdb_client/client/Client.py

@@ -8,7 +8,6 @@
 import warnings
 from collections.abc import Iterable
 from datetime import datetime
-from enum import Enum
 from typing import Any, Dict, List, Optional, Union
 
 import requests

terminusdb_client/tests/integration_tests/test_client.py

@@ -282,6 +282,7 @@ def test_has_database(docker_url):
     assert client.has_database(db_name)
     assert not client.has_database("DOES_NOT_EXISTDB")
 
+
 def test_optimize(docker_url):
     client = Client(docker_url, user_agent=test_user_agent, team="admin")
     client.connect()
@@ -292,6 +293,7 @@ def test_optimize(docker_url):
         client.insert_document({"name": f"Philosopher{x}"}, raw_json=True)
     client.optimize(f"admin/{db_name}")
 
+
 def test_add_get_remove_user(docker_url):
     # create client
     client = Client(docker_url, user_agent=test_user_agent)