Merge branch 'bojan/applications-settings-columns-cleanup-2' into 'master'

Remove columns from the application_settings table

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/137986



Merged-by: Adam Hegyi <ahegyi@gitlab.com>
Approved-by: Serena Fang <sfang@gitlab.com>
Approved-by: Adam Hegyi <ahegyi@gitlab.com>
Co-authored-by: bmarjanovic <bmarjanovic@gitlab.com>