[toward-py3k] remove import with_statement (part of #2711624)

They are unneeded since we dropped python 2.5 compatibility. This will help
Python 3.3 experimentation.

__init__.py

@@ -18,8 +18,6 @@
 """CubicWeb is a generic framework to quickly build applications which describes
 relations between entitites.
 """
-from __future__ import with_statement
-
 __docformat__ = "restructuredtext en"
 
 # ignore the pygments UserWarnings

devtools/__init__.py

@@ -17,8 +17,6 @@
 # with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
 """Test tools for cubicweb"""
 
-from __future__ import with_statement
-
 __docformat__ = "restructuredtext en"
 
 import os

devtools/httptest.py

@@ -18,8 +18,6 @@
 """this module contains base classes and utilities for integration with running
 http server
 """
-from __future__ import with_statement
-
 __docformat__ = "restructuredtext en"
 
 import threading

devtools/test/unittest_testlib.py

@@ -16,7 +16,6 @@
 # You should have received a copy of the GNU Lesser General Public License along
 # with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
 """unittests for cw.devtools.testlib module"""
-from __future__ import with_statement
 
 from cStringIO import StringIO
 

devtools/testlib.py

@@ -16,9 +16,6 @@
 # You should have received a copy of the GNU Lesser General Public License along
 # with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
 """this module contains base classes and utilities for cubicweb tests"""
-
-from __future__ import with_statement
-
 __docformat__ = "restructuredtext en"
 
 import os

entities/test/unittest_base.py

@@ -17,9 +17,7 @@
 # You should have received a copy of the GNU Lesser General Public License along
 # with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
 """unit tests for cubicweb.entities.base module
-
 """
-from __future__ import with_statement
 
 from logilab.common.testlib import unittest_main
 from logilab.common.decorators import clear_cache

entities/test/unittest_wfobjs.py

@@ -16,8 +16,6 @@
 # You should have received a copy of the GNU Lesser General Public License along
 # with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
 
-from __future__ import with_statement
-
 from cubicweb import ValidationError
 from cubicweb.devtools.testlib import CubicWebTC
 

etwist/server.py

@@ -16,9 +16,6 @@
 # You should have received a copy of the GNU Lesser General Public License along
 # with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
 """twisted server for CubicWeb web instances"""
-
-from __future__ import with_statement
-
 __docformat__ = "restructuredtext en"
 
 import sys

hooks/test/unittest_hooks.py

@@ -21,7 +21,6 @@
 Note:
   syncschema.py hooks are mostly tested in server/test/unittest_migrations.py
 """
-from __future__ import with_statement
 
 from datetime import datetime
 

hooks/test/unittest_integrity.py

@@ -18,8 +18,6 @@
 # with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
 """functional tests for integrity hooks"""
 
-from __future__ import with_statement
-
 from cubicweb import ValidationError
 from cubicweb.devtools.testlib import CubicWebTC
 

hooks/test/unittest_syncsession.py

@@ -21,7 +21,6 @@
 Note:
   syncschema.py hooks are mostly tested in server/test/unittest_migrations.py
 """
-from __future__ import with_statement
 
 from cubicweb import ValidationError
 from cubicweb.devtools.testlib import CubicWebTC

misc/migration/3.10.0_Any.py

-from __future__ import with_statement
-
 from cubicweb.server.session import hooks_control
 
 for uri, cfg in config.sources().items():

misc/migration/3.10.9_Any.py

-from __future__ import with_statement
 import sys
 
-
 if confirm('fix some corrupted entities noticed on several instances?'):
     rql('DELETE CWConstraint X WHERE NOT E constrained_by X')
     rql('SET X is_instance_of Y WHERE X is Y, NOT X is_instance_of Y')

misc/migration/bootstrapmigration_repository.py

@@ -19,7 +19,6 @@
 
 it should only include low level schema changes
 """
-from __future__ import with_statement
 
 from cubicweb.server.session import hooks_control
 from cubicweb.server import schemaserial as ss

misc/scripts/repair_file_1-9_migration.py

@@ -4,7 +4,6 @@ FYI, this migration occurred :
 * on our intranet on July 07 2010
 * on our extranet on July 16 2010
 """
-from __future__ import with_statement
 
 try:
     backupinstance, = __args__

rqlrewrite.py

@@ -20,8 +20,6 @@ tree.
 
 This is used for instance for read security checking in the repository.
 """
-from __future__ import with_statement
-
 __docformat__ = "restructuredtext en"
 
 from rql import nodes as n, stmts, TypeResolverException

server/__init__.py

@@ -21,8 +21,6 @@
 The server module contains functions to initialize a new repository.
 """
 
-from __future__ import with_statement
-
 __docformat__ = "restructuredtext en"
 
 import sys

server/checkintegrity.py

@@ -20,9 +20,6 @@
 * integrity of a CubicWeb repository. Hum actually only the system database is
   checked.
 """
-
-from __future__ import with_statement
-
 __docformat__ = "restructuredtext en"
 
 import sys

server/edition.py

@@ -16,9 +16,6 @@
 # You should have received a copy of the GNU Lesser General Public License along
 # with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
 """helper classes to handle server-side edition of entities"""
-
-from __future__ import with_statement
-
 __docformat__ = "restructuredtext en"
 
 from copy import copy

server/hook.py

@@ -245,9 +245,6 @@ Hooks and operations classes
 .. autoclass:: cubicweb.server.hook.LateOperation
 .. autoclass:: cubicweb.server.hook.DataOperationMixIn
 """
-
-from __future__ import with_statement
-
 __docformat__ = "restructuredtext en"
 
 from warnings import warn