[IMP] fields: remove unused imports

diff --git a/openerp/fields.py b/openerp/fields.py
index dc3bfc4..ae8f437 100644 (file)
--- a/openerp/fields.py
+++ b/openerp/fields.py
@@ -21,7 +21,6 @@
 
 """ High-level objects for fields. """
 
-from copy import copy
 from datetime import date, datetime
 from functools import partial
 from operator import attrgetter
@@ -30,8 +29,6 @@ import logging
 import pytz
 import xmlrpclib
 
-from types import NoneType
-
 from openerp.tools import float_round, ustr, html_sanitize
 from openerp.tools import DEFAULT_SERVER_DATE_FORMAT as DATE_FORMAT
 from openerp.tools import DEFAULT_SERVER_DATETIME_FORMAT as DATETIME_FORMAT