Before this commit: When we try to delete a Meeting type Activity from the technical menu "Settings > Technical > Activities" it do not delete the associated calendar event. After this commit: The calendar event will be deleted when the associated Activity gets deleted. task-3493426 closes odoo/odoo#144674 X-original-commit: 71dc58acfcc4589bc5996b48e157aea6b0f8a609 Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com>