drop remnants of Python 2

Author: Changaco

libarchive/entry.py

@@ -20,7 +20,7 @@ def format_time(seconds, nanos):
     return int(seconds)
 
 
-class ArchiveEntry(object):
+class ArchiveEntry:
 
     __slots__ = ('_archive_p', '_entry_p')
 

libarchive/read.py

@@ -10,7 +10,7 @@
 from .entry import ArchiveEntry, new_archive_entry
 
 
-class ArchiveRead(object):
+class ArchiveRead:
 
     def __init__(self, archive_p):
         self._pointer = archive_p

libarchive/write.py

@@ -27,7 +27,7 @@ def new_archive_read_disk(path, flags=0, lookup=False):
         read_free(archive_p)
 
 
-class ArchiveWrite(object):
+class ArchiveWrite:
 
     def __init__(self, archive_p):
         self._pointer = archive_p

tests/test_security_flags.py

@@ -1,6 +1,5 @@
 """Test security-related extraction flags."""
 
-from __future__ import division, print_function, unicode_literals
 import pytest
 import os