Fix international minutes products
CHANGELOG:
### Fixed
- [#590](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/590) Fix international minutes products: delete the erroneous 200 minutes product and add the missing 600 minutes one.
Related card: https://trello.com/c/qNrHf1iS/901-actualitzar-els-productes-de-minuts-internacionals
The 200 min product is an error and it does not exist in the forms. That's why no contract in odoo uses that product and therefore this MR should be deployed without the need to update contracts in prod DB.
Edited by Pelayo García