Removed call to deprecated endpoint in tests

Author: c8y3

tests/iris.py

@@ -123,7 +123,7 @@ def clear_database(self):
         for user in users['data']:
             identifier = user['user_id']
             self.get(f'/manage/users/deactivate/{identifier}')
-            self.create(f'/manage/users/delete/{identifier}', {})
+            self.delete(f'api/v2/manage/users/{identifier}')
             self.delete(f'/api/v2/manage/users/{identifier}')
         response = self.get('api/v2/alerts').json()
         for alert in response['data']: