Remove python 2 compatibility snippets and testing 🎉

.travis.yml

@@ -5,7 +5,6 @@ cache: pip
 dist: trusty
 
 python:
-- '2.7'
 - '3.6'
 
 before_install:

lsru/__init__.py

@@ -1,27 +1,15 @@
-from __future__ import print_function
-
 import os
 import json
 import datetime
 from pprint import pprint
-# handle configparser python2, 3 compatibility
-try:
- from configparser import ConfigParser
-except ImportError:
- from ConfigParser import ConfigParser
+from configparser import ConfigParser
 
 import requests
 
 from .utils import url_retrieve, url_retrieve_and_unpack
 
 __version__ = "0.5.2"
 
-# FileNotFoundError does not exist in python2
-try:
- FileNotFoundError
-except NameError:
- FileNotFoundError = IOError
-
 
 class Usgs(object):
  """Interface to the Usgs API

setup.py

@@ -31,7 +31,6 @@
  url='https://github.com/loicdtx/landsat-espa-util',
  license='GPLv3',
  classifiers=[
- 'Programming Language :: Python :: 2.7',
  'Programming Language :: Python :: 3.3',
  'Programming Language :: Python :: 3.4',
  'Programming Language :: Python :: 3.5',