Small fixup of recent commit [1].

A regular user do not have delete right on iap.account model, hence
creating an access right error. We should allow him to delete accounts
without token so they will be re-created afterwards.

[1]:https://github.com/odoo/odoo/commit/974caef934b7a116b7375f05e047aea15ea960aa



closes odoo/odoo#99817

Signed-off-by: Florian Daloze (fda) <fda@odoo.com>