Remove the ability to export groups from UI

Problem to solve

With the deprecation of the Group Export/Import functionality, we need to remove the ability to export a group into a file.

Proposed solution

Remove the Export group section on the Group > Settings > General > Advanced page.

Illustrations

Further considerations

• Remove Group file import from the New Group creation flow - #341275
• Remove the ability to export groups using API - issue needed
• Remove the ability to import a group file using API - issue needed

Documentation

• 📖 Group Export/Import
• 📖 GitLab Migration