This update streamlines the demo data for the Indian payroll module (l10n_in_hr_payroll) by removing redundant working schedules. The change consolidates the demo data to use a standard 40-hour work week, improving data consistency and reducing complexity. This simplifies the demo experience for users.

### Aim
- In the demo data, there is no need to create multiple working schedules for Indian locations.
- We can use a single working schedule of 40 hours per week.

Task: 5899739

This update removes the 'Add Note' button from the kiosk interface within the Odoo POS Self-Order module. This simplifies the kiosk experience for customers, reducing potential confusion and improving ease of use. The change was implemented as part of a standard improvement.

The goal of this pr was to remove the "Add note" button in the Kiosk.

task: 5470923

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This pull request removes a duplicate method that was unintentionally introduced during a recent code update. The issue was flagged by automated testing (pylint) after a build update, indicating a technical debt. This change ensures code consistency and prevents potential future problems.

The duplicate method was introduced in #230757, it apparently was removed while forward porting as it is missing from #241691 but nobody went back to remove it from the original, and after updating pylint on the nightly distro builds they now complain.

https://runbot.odoo.com/odoo/runbot.build.error/237791