The old QUnit testing framework and related legacy test files have been removed from several Odoo apps. This simplifies maintenance and keeps automated testing infrastructure aligned with the current tooling, with no expected impact on day-to-day users.

*: barcodes,im_livechat,mail,point_of_sale,web,website_livechat
*: test_assetsbundle,test_lint, tools

Remove the now useless legacy QUnit test framework.

This pull request removed a function in the Odoo Enterprise livechat module that performed no useful action. The function simply forwarded arguments to another function, creating unnecessary complexity. This change improves code clarity and efficiency.

This function does nothing excepts forwarding kwargs to `_add_members`.

https://github.com/odoo/odoo/pull/257535