[REM] hr_payroll_account: Remove patch applied to get partner_id of hr_payslip_line

[moylop260]

We have a PR to odoo/odoo and they will merge it
odoo#3385

We need to revert next custom patch: #3 that was used in next module: https://github.com/Vauxoo/hr/blob/8.0/hr_loan/model/hr_payroll.py#L70
Now, we need make hr_loan changes to use odoo#3385
And make a new pr to vauxoo/odoo with changes of odoo#3385