[IMP] account: Make fiscal position field searchable on partner form
[IMP] account: Make fiscal position field searchable on partner form

- Remove the "selection" widget from the fiscal position field.
- User can create this field only from Configuration menu of accounting.

hip-odoo/odoo,ygol/odoo,dfang/odoo,ygol/odoo,hip-odoo/odoo,hip-odoo/odoo,ygol/odoo,dfang/odoo,hip-odoo/odoo,dfang/odoo,ygol/odoo,hip-odoo/odoo,dfang/odoo,ygol/odoo,dfang/odoo,dfang/odoo,hip-odoo/odoo,ygol/odoo,ygol/odoo