Re-implement sidekiq learn gitlab worker removal migration
The following discussion from !113899 (merged) should be addressed:
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@dstull started a discussion: rolled back - see gitlab-com/gl-infra/production#8612 (comment 1331881341) - we should try this again somehow. Perhaps only include the bits needed to remove sidekiq from queue instead of all database items...
See #408922 (comment 1371326639) for the fix
Edited by Doug Stull