Removed some platform checks

src/extra/SpellChecker/spellchecker.py

@@ -1,8 +1,4 @@
 # -*- coding: utf-8 -*-
-from __future__ import absolute_import
-from __future__ import unicode_literals
-from builtins import next
-from builtins import object
 import os
 import logging
 from . import wx_ui

src/extra/SpellChecker/twitterFilter.py

@@ -1,5 +1,4 @@
 # -*- coding: utf-8 -*-
-from __future__ import unicode_literals
 import re
 from enchant.tokenize import Filter
 

src/extra/SpellChecker/wx_ui.py

@@ -16,7 +16,6 @@
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ############################################################
-from __future__ import unicode_literals
 import wx
 import application