1 files changed, 0 insertions, 43 deletions
diff --git a/db/post_migrate/20180511174224_add_unique_constraint_to_project_features_project_id.rb b/db/post_migrate/20180511174224_add_unique_constraint_to_project_features_project_id.rb
deleted file mode 100644
index a526001a91e..00000000000
--- a/db/post_migrate/20180511174224_add_unique_constraint_to_project_features_project_id.rb
+++ /dev/null
@@ -1,43 +0,0 @@
-class AddUniqueConstraintToProjectFeaturesProjectId < ActiveRecord::Migration[4.2]
-  include Gitlab::Database::MigrationHelpers
-
-  DOWNTIME = false
-
-  disable_ddl_transaction!
-
-  class ProjectFeature < ActiveRecord::Base
-    self.table_name = 'project_features'
-
-    include EachBatch
-  end
-
-  def up
-    remove_duplicates
-
-    add_concurrent_index :project_features, :project_id, unique: true, name: 'index_project_features_on_project_id_unique'
-    remove_concurrent_index_by_name :project_features, 'index_project_features_on_project_id'
-    rename_index :project_features, 'index_project_features_on_project_id_unique', 'index_project_features_on_project_id'
-  end
-
-  def down
-    rename_index :project_features, 'index_project_features_on_project_id', 'index_project_features_on_project_id_old'
-    add_concurrent_index :project_features, :project_id
-    remove_concurrent_index_by_name :project_features, 'index_project_features_on_project_id_old'
-  end
-
-  private
-
-  def remove_duplicates
-    features = ProjectFeature
-               .select('MAX(id) AS max, COUNT(id), project_id')
-               .group(:project_id)
-               .having('COUNT(id) > 1')
-
-    features.each do |feature|
-      ProjectFeature
-        .where(project_id: feature['project_id'])
-        .where('id <> ?', feature['max'])
-        .each_batch { |batch| batch.delete_all }
-    end
-  end
-end