1 files changed, 0 insertions, 48 deletions
diff --git a/lib/gitlab/background_migration/migrate_build_stage.rb b/lib/gitlab/background_migration/migrate_build_stage.rb
deleted file mode 100644
index 268c6083d3c..00000000000
--- a/lib/gitlab/background_migration/migrate_build_stage.rb
+++ /dev/null
@@ -1,48 +0,0 @@
-# frozen_string_literal: true
-# rubocop:disable Style/Documentation
-
-module Gitlab
-  module BackgroundMigration
-    class MigrateBuildStage
-      module Migratable
-        class Stage < ActiveRecord::Base
-          self.table_name = 'ci_stages'
-        end
-
-        class Build < ActiveRecord::Base
-          self.table_name = 'ci_builds'
-          self.inheritance_column = :_type_disabled
-
-          def ensure_stage!(attempts: 2)
-            find_stage || create_stage!
-          rescue ActiveRecord::RecordNotUnique
-            retry if (attempts -= 1) > 0
-            raise
-          end
-
-          def find_stage
-            Stage.find_by(name: self.stage || 'test',
-                          pipeline_id: self.commit_id,
-                          project_id: self.project_id)
-          end
-
-          def create_stage!
-            Stage.create!(name: self.stage || 'test',
-                          pipeline_id: self.commit_id,
-                          project_id: self.project_id)
-          end
-        end
-      end
-
-      def perform(start_id, stop_id)
-        stages = Migratable::Build.where('stage_id IS NULL')
-          .where('id BETWEEN ? AND ?', start_id, stop_id)
-          .map { |build| build.ensure_stage! }
-          .compact.map(&:id)
-
-        MigrateBuildStageIdReference.new.perform(start_id, stop_id)
-        MigrateStageStatus.new.perform(stages.min, stages.max)
-      end
-    end
-  end
-end