Remove a bunch of old Python 2 compatible code

json_store/__init__.py

@@ -1,5 +1,3 @@
-from __future__ import absolute_import
-
 from .json_store import JSONStore
 
 __version__ = "4.0"

json_store/json_store.py

@@ -4,22 +4,11 @@
 This is for small stores. Everything is in memory and sync() always writes
 everything out to disk.
 """
-from __future__ import absolute_import
-from __future__ import unicode_literals
-
+import json
 import os
+from collections.abc import MutableMapping
 from tempfile import NamedTemporaryFile
 
-try:
-    import simplejson as json
-except ImportError:
-    import json
-
-try:
-    from collections.abc import MutableMapping
-except ImportError:
-    from collections import MutableMapping
-
 __all__ = ["JSONStore"]
 
 MODE_600 = int("600", 8)

json_store/shelve2json.py

@@ -1,7 +1,5 @@
 #! /usr/bin/env python
 # encoding: utf-8
-from __future__ import absolute_import, print_function, unicode_literals
-
 """Naïvely create a json_store file from a shelve DB."""
 
 import os

tests/test_json_store.py

@@ -1,17 +1,11 @@
 # encoding: utf-8
-from __future__ import absolute_import, unicode_literals
-
+import json
 import os
 import platform
 import shutil
 import stat
 from tempfile import NamedTemporaryFile
 
-try:
-    import simplejson as json
-except ImportError:
-    import json
-
 import json_store