Remove cluster_providers_aws.created_by_user_id column ignore

What does this MR do?

Removes column ignore for created_by_user_id on cluster_providers_aws, which was removed in %13.5.

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• [-] Separation of EE specific content

Closes #35223 (closed)