You can try to use "_rec_name = 'location'" in your partner_bank_id model like below

 class SalesPartnerBankInherit(models.Model):
    _inherit = 'res.partner.bank'
    _rec_name = 'location'

    display_on_sales = fields.Boolean(string='Display On Sales Quotation '
                                             'Report', readonly=False)
    location = fields.Char()