[FIX] hr_expense: Don't write 'payment_id' on aml

This line was an hack to manage the custom register payment wizard of hr_expense.
Since this wizard is gone and 'payment_id' is a related stored field in account.move.line, we should not write such data explicitely.

closes odoo/odoo#67127

Signed-off-by: oco-odoo <oco-odoo@users.noreply.github.com>