Now that $wgBlockTargetMigrationStage is set to SCHEMA_COMPAT_NEW on WMF wikis, we can remove the relevant schema-independent migration code and unconditionally use the new schema.
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Change #1023166 had a related patch set uploaded (by Tim Starling; author: Tim Starling):
[mediawiki/core@master] block: Deprecate and stop using $wgBlockTargetMigrationStage
Change #1023166 merged by jenkins-bot:
[mediawiki/core@master] block: Deprecate and stop using $wgBlockTargetMigrationStage
Change #1046796 had a related patch set uploaded (by Tim Starling; author: Tim Starling):
[mediawiki/extensions/GrowthExperiments@master] Stop using $wgBlockTargetMigrationStage
Change #1046798 had a related patch set uploaded (by Tim Starling; author: Tim Starling):
[mediawiki/extensions/PageTriage@master] Stop using $wgBlockTargetMigrationStage
Change #1046796 merged by jenkins-bot:
[mediawiki/extensions/GrowthExperiments@master] Stop using $wgBlockTargetMigrationStage
Change #1046798 merged by jenkins-bot:
[mediawiki/extensions/PageTriage@master] Stop using $wgBlockTargetMigrationStage
@tstarling this task has been in review since June 17. I wanted to confirm if it still needs review. Is there a specific person you need feedback from?