[REM] mail: remove duplicated mass mailing action on partner
[REM] mail: remove duplicated mass mailing action on partner

This action allowing to send a mass mailing with a default template on a
partner is defined twice in mail on same object, with same xml_id. See in
composer views for the other definition.

This commit is linked to task ID 1843361 (and 1868112) and to PR #25287
(and #25889).

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo