Unset payment_mode_id in Credit Note creation
CHANGELOG:
### FIXED
- [#567](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/567) Unset payment_mode_id in Credit Note creation
Edited by Pelayo García
CHANGELOG:
### FIXED
- [#567](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/567) Unset payment_mode_id in Credit Note creation