Removing unneeded from __future__ import statements.

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

ebook_converter/ebooks/docx/index.py

@@ -1,10 +1,3 @@
-#!/usr/bin/env python2
-# vim:fileencoding=utf-8
-from __future__ import absolute_import, division, print_function, unicode_literals
-
-__license__ = 'GPL v3'
-__copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
-
 from operator import itemgetter
 
 from lxml import etree
@@ -13,6 +6,10 @@ from ebook_converter.utils.icu import partition_by_first_letter, sort_key
 from ebook_converter.polyglot.builtins import iteritems, filter
 
 
+__license__ = 'GPL v3'
+__copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
+
+
 def get_applicable_xe_fields(index, xe_fields, XPath, expand):
     iet = index.get('entry-type', None)
     xe_fields = [xe for xe in xe_fields if xe.get('entry-type', None) == iet]