try to make pylint happy

bin/coverage-html.py

@@ -1,18 +1,17 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
-from __future__ import unicode_literals
 import argparse
-import coverage
 import datetime
 import os
 import shutil
 import sys
 import time
+import coverage
 from selenium import webdriver
 from selenium.common.exceptions import WebDriverException
 
 
-class Command(object):
+class Command:  # pylint: disable=too-few-public-methods
     default_browser = 'firefox'
 
     @staticmethod