Spreadsheet pivot tables and related menus were updated to align with the latest spreadsheet engine changes. This improves data consistency in pivot measures and supports smoother future spreadsheet upgrades without changing day-to-day workflows.

See https://github.com/odoo/odoo/pull/173681

This update corrects internal code imports used by accounting reports and removes an unused reference. It helps keep the reporting module compatible and easier to maintain without changing day-to-day user workflows.

- `parse_version` should never have been imported from `odoo.tools.misc` because it was never intentionally exported from there (misc just used it internally, and has not done that since 2021)
- remove unused `_lt` import
- fix imports organisation