It is not possible to unset { -brand-short-name } as the default client within { -brand-short-name }. To make another application the default you must use its 'Set as default' dialog.
Ezin da { -brand-short-name } barruan { -brand-short-name } bezero lehenetsi gisa desezarri. Beste aplikazio bat lehenesteko, erabili bere 'Ezarri lehenetsitako gisa' elkarrizketa-koadroa.