Removing unneeded from __future__ import statements.

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

ebook_converter/ebooks/metadata/txt.py

@@ -1,18 +1,15 @@
-# -*- coding: utf-8 -*-
-from __future__ import absolute_import, division, print_function, unicode_literals
-
-__license__   = 'GPL v3'
-__copyright__ = '2009, John Schember <john@nachtimwald.com>'
-
-'''
+"""
 Read meta information from TXT files
-'''
-
+"""
 import re, os
 
 from ebook_converter.ebooks.metadata import MetaInformation
 
 
+__license__   = 'GPL v3'
+__copyright__ = '2009, John Schember <john@nachtimwald.com>'
+
+
 def get_metadata(stream, extract_cover=True):
     '''
     Return metadata as a L{MetaInfo} object