ctl: remove clean_session ctl command (#6746)

There's a registered cronjob do to the job, an external command is not
required.

wcs/ctl/clean_sessions.py

@@ -1,52 +0,0 @@
-# w.c.s. - web application for online forms
-# Copyright (C) 2005-2010  Entr'ouvert
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, see <http://www.gnu.org/licenses/>.
-
-import time
-import os
-
-from qommon.ctl import Command
-
-def clean_vhost_sessions():
-    import sessions
-    manager = sessions.StorageSessionManager()
-    one_week_ago = time.time() - 2*86400
-    one_month_ago = time.time() - 30*86400
-    for session_key in manager.keys():
-        try:
-            session = manager.get(session_key)
-        except AttributeError:
-            del manager[session_key]
-            continue
-        if session._access_time < one_week_ago or session._creation_time < one_month_ago:
-            del manager[session.id]
-
-
-class CmdCleanSessions(Command):
-    name = 'clean_sessions'
-
-    def execute(self, base_options, sub_options, args):
-        import publisher
-
-        publisher.WcsPublisher.configure(self.config, sub_options.extra)
-        pub = publisher.WcsPublisher.create_publisher()
-
-        app_dir = pub.app_dir
-        hostnames = os.listdir(app_dir)
-        for hostname in hostnames:
-            pub.app_dir = os.path.join(app_dir, hostname)
-            clean_vhost_sessions()
-
-CmdCleanSessions.register()