Prior this commit: The mail scheduler of the event notifies the attendees even when the event is no longer active. After this commit: Inactive events no longer notify attendees. Task-3381876 closes odoo/odoo#136429 X-original-commit: b61ece38a29e63f77daa638472228caa063d26e6 Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>