Cleanup.

tests/e2e_tests/test_beremiz.py

-#import configparser
-#import json
-#import logging
-#import unittest
-#import slapos.client
 import time
 from opcua import Client
 import slapos.testing.e2e as e2e
 
-
 class BeremizTest(e2e.EndToEndTestCase):
   """
   This tests check proper functioning with real instances (inside SlapOS cloud)