Revert "Merge branch 'vij-async-billable-destroy' into 'master' "

Purpose of revert

This reverts commit d6089082, reversing changes made to 0e3a2b40.

Keep Sidekiq worker definition so that existing queued jobs can at least run.

gitlab-com/gl-infra/production#18435 (closed)

Checklist

• Create an issue to reinstate the merge request and assign it to the author of the reverted merge request. => #467281
• If the revert is to resolve a broken 'master' incident, please read through the Responsibilities of the Broken master resolution DRI.
• If the revert involves a database migration, please read through Deleting existing migrations.
• Add the appropriate labels before the MR is created. We can skip CI/CD jobs only if the labels are added before the CI/CD pipeline is created.

Milestone info

• I am reverting something in the current milestone. No changelog is needed, and I've added a ~"regression:*" label.
• I am reverting something in a different milestone. A changelog is needed, and I've removed the ~"regression:*" label.

Related issues and merge requests