Remove unused `Gitlab::Database::MultiThreadedMigration`
What does this MR do?
Since this class is not used, and it is not many databases aware. Lets remove it instead of trying to fix it.
Fixes:
Conformity
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I have included changelog trailers, or none are needed. (Does this MR need a changelog?) -
I have added/updated documentation, or it's not needed. (Is documentation required?) -
I have added information for database reviewers in the MR description, or it's not needed. (Does this MR have database related changes?) -
I have self-reviewed this MR per code review guidelines. -
I have followed the style guides. -
This change is backwards compatible across updates, or this does not apply.
Edited by Thong Kuah