Removing unneeded from __future__ import statements.

Since we are on Python 3.6 and up, we don't need those anymore.

ebook_converter/ebooks/mobi/reader/index.py

@@ -1,11 +1,3 @@
-#!/usr/bin/env python2
-# vim:fileencoding=UTF-8:ts=4:sw=4:sta:et:sts=4:ai
-from __future__ import absolute_import, division, print_function, unicode_literals
-
-__license__   = 'GPL v3'
-__copyright__ = '2012, Kovid Goyal <kovid@kovidgoyal.net>'
-__docformat__ = 'restructuredtext en'
-
 import struct
 from collections import OrderedDict, namedtuple
 
@@ -13,6 +5,11 @@ from ebook_converter.ebooks.mobi.utils import (decint, count_set_bits,
         decode_string)
 from ebook_converter.polyglot.builtins import iteritems, range, zip
 
+
+__license__   = 'GPL v3'
+__copyright__ = '2012, Kovid Goyal <kovid@kovidgoyal.net>'
+__docformat__ = 'restructuredtext en'
+
 TagX = namedtuple('TagX', 'tag num_of_values bitmask eof')
 PTagX = namedtuple('PTagX', 'tag value_count value_bytes num_of_values')
 INDEX_HEADER_FIELDS = (