pyflakes fixes

bank.py

@@ -1,14 +1,14 @@
 #This file is part party_bank module for Tryton.
-#The COPYRIGHT file at the top level of this repository contains 
+#The COPYRIGHT file at the top level of this repository contains
 #the full copyright notices and license terms.
 from trytond.model import ModelView, ModelSQL, fields
 from trytond.backend import TableHandler
 from trytond.pyson import Not, Eval, Bool
 from trytond.transaction import Transaction
-from trytond.pool import Pool
 
 __all__ = ['Bank', 'BankAccount']
 
+
 class Bank(ModelSQL, ModelView):
     'Bank'
     __name__ = 'bank.bank'

party.py

@@ -1,7 +1,7 @@
 #This file is part party_bank module for Tryton.
 #The COPYRIGHT file at the top level of this repository contains 
 #the full copyright notices and license terms.
-from trytond.model import ModelView, ModelSQL, fields
+from trytond.model import fields
 from trytond.pool import PoolMeta
 
 __all__ = ['Party']

setup.py

@@ -1,11 +1,10 @@
 #!/usr/bin/env python
 #This file is part party_bank module for Tryton.
-#The COPYRIGHT file at the top level of this repository contains 
+#The COPYRIGHT file at the top level of this repository contains
 #the full copyright notices and license terms.
 
 from setuptools import setup
 import re
-import os
 import ConfigParser
 
 config = ConfigParser.ConfigParser()