This update simplifies the AI modules by replacing outdated PyTZ dependencies with the more current ZoneInfo. This change was driven by a previous update to standardize timezone handling within Odoo, ensuring greater consistency and accuracy.

Small commit that replaces pytz dependencies with ZoneInfo since the following PR made that be the standard choice:

https://github.com/odoo/odoo/pull/236660

This update removes an outdated dependency (pytz) from the AI module. The change was made to improve performance and align with best practices for timezone handling. This ensures Odoo continues to run efficiently and reliably.

Since #100008 the usage of pytz should be avoided and replaced by ZoneInfo.

This update removes a rarely used code for work entry types within the Odoo Enterprise payroll module. This cleanup improves the system's efficiency and reduces potential complexity. The change is a routine maintenance task to ensure the system remains optimized.

Removed code `LEAVE510` since it's not referenced anymore

Task: 5365455