Merge branch 'remove-sidekiq-daemon-memory-killer' into 'master'

Remove legacy Sidekiq Daemon Memory Killer.

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/118507



Merged-by: Jon Glassman <jglassman@gitlab.com>
Approved-by: Mehmet Emin INAC <minac@gitlab.com>
Approved-by: Jon Glassman <jglassman@gitlab.com>
Approved-by: Rutger Wessels <rwessels@gitlab.com>
Reviewed-by: Rutger Wessels <rwessels@gitlab.com>
Co-authored-by: Nikola Milojevic <nmilojevic@gitlab.com>