[REM] hr_skills: remove unused certification report

[yewentai]

Following the refactoring of LMS (Learning Management System) and
Skills, the module retained duplicate reporting capabilities regarding
certifications.

This commit removes the dedicated "Employee Certification Report"
(including its model, views, menu items, and access rights) as it is
redundant and no longer accessible from the user interface.

Additionally, this commit:

• Removes the intermediate "Skills" menu container, moving the "Skills
  Inventory" and "Learning" reports directly under "HR Reports".
• Removes the default "Group By" context from the "Learning >
  Certifications" list view to provide a flat list by default.

[robodoo]

This PR targets the un-managed branch odoo-dev/odoo:master-hr-onboarding-joyep, it needs to be retargeted before it can be merged.

[robodoo]

This PR targets the un-managed branch odoo-dev/odoo:master-hr-onboarding-joyep, it needs to be retargeted before it can be merged.

[Copilot]

Pull request overview

This PR removes duplicate certification reporting functionality from the hr_skills module following the LMS and Skills refactoring. The dedicated "Employee Certification Report" is removed entirely as it is redundant and inaccessible from the UI.

• Completely removes the hr.employee.certification.report model and all associated files
• Restructures the menu hierarchy by eliminating the intermediate "Skills" menu container
• Simplifies the certifications list view by removing the default "Group By" filter

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
addons/hr_skills/__manifest__.py	Removes reference to deleted certification report views file from data list
addons/hr_skills/report/__init__.py	Removes import of deleted certification report module
addons/hr_skills/report/hr_employee_certification_report.py	Deletes the certification report model entirely (71 lines removed)
addons/hr_skills/report/hr_employee_certification_report_views.xml	Deletes all certification report views including pivot, list, search, action, and menu (71 lines removed)
addons/hr_skills/security/ir.model.access.csv	Removes access rights for the deleted certification report model
addons/hr_skills/report/hr_employee_skill_report_views.xml	Updates Skills Inventory menu parent from intermediate "Skills" menu to "HR Reports"
addons/hr_skills/views/hr_views.xml	Removes intermediate "Skills" menu container and default group-by context from certifications view

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[YassinWalid]

Thanks for your work. I have two small comments though. The commit message is lacking the task number, and you should write an upgrade script to remove the deleted action, menus, and model from the databases when upgrading to the new version. You can find a guide here. (also you can check the upgrade-util symlink in the Newbies Onboarding knowledge page if it helps)