Revert changes from 414396-complete-ci-builds-partitioning

What does this MR do and why?

Revert "Merge branch '414396-complete-ci-builds-partitioning' into 'master'"

This reverts merge request !126701 (merged) because it was successful and is no longer needed: https://log.gprd.gitlab.net/app/r/s/LjWfK

Related to #414396 (closed)

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