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/pdf.py

@@ -1,9 +1,6 @@
-from __future__ import absolute_import, division, print_function, unicode_literals
-
-__license__   = 'GPL v3'
-__copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>'
-'''Read meta information from PDF files'''
-
+"""
+Read meta information from PDF files
+"""
 import os, subprocess, shutil, re
 from functools import partial
 
@@ -16,6 +13,10 @@ from ebook_converter.utils.ipc.simple_worker import fork_job, WorkerError
 from ebook_converter.polyglot.builtins import iteritems, unicode_type
 
 
+__license__   = 'GPL v3'
+__copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>'
+
+
 def get_tools():
     from ebook_converter.ebooks.pdf.pdftohtml import PDFTOHTML
     base = os.path.dirname(PDFTOHTML)