[FIX] base: expiration date does not belong in the community edition

The expiration date will now be set when installing the enterprise
'web' module instead of at the init of the database since putting
an expiration date on a community edition database doesn't make sense.

openerp/addons/base/ir/ir_config_parameter.py

@@ -18,7 +18,6 @@ _default_parameters = {
     "database.secret": lambda: (str(uuid.uuid4()), ['base.group_erp_manager']),
     "database.uuid": lambda: (str(uuid.uuid1()), []),
     "database.create_date": lambda: (datetime.datetime.now().strftime(misc.DEFAULT_SERVER_DATETIME_FORMAT), ['base.group_user']),
-    "database.expiration_date": lambda: ((datetime.datetime.now()+datetime.timedelta(+30)).strftime(misc.DEFAULT_SERVER_DATETIME_FORMAT), ['base.group_user']),
     "web.base.url": lambda: ("http://localhost:%s" % config.get('xmlrpc_port'), []),
 }