3 files changed, 3 insertions, 125 deletions
diff --git a/app/services/merge_requests/update_assignees_service.rb b/app/services/merge_requests/update_assignees_service.rb
index 79a3e9f3c22..d45d55cbebc 100644
--- a/app/services/merge_requests/update_assignees_service.rb
+++ b/app/services/merge_requests/update_assignees_service.rb
@@ -19,16 +19,9 @@ module MergeRequests
 
       attrs = update_attrs.merge(assignee_ids: new_ids)
 
-      # We now have assignees validation on merge request
-      # If we use an update with bang, it will explode,
-      # instead we need to check if its valid then return if its not valid.
-      if Feature.enabled?(:limit_assignees_per_issuable)
-        merge_request.update(**attrs)
-
-        return merge_request unless merge_request.valid?
-      else
-        merge_request.update!(**attrs)
-      end
+      merge_request.update(**attrs)
+
+      return merge_request unless merge_request.valid?
 
       # Defer the more expensive operations (handle_assignee_changes) to the background
       MergeRequests::HandleAssigneesChangeService
diff --git a/app/services/notes/create_service.rb b/app/services/notes/create_service.rb
index 1aaf7fb769a..555d60dc291 100644
--- a/app/services/notes/create_service.rb
+++ b/app/services/notes/create_service.rb
@@ -137,8 +137,6 @@ module Notes
     end
 
     def invalid_assignees?(update_params)
-      return false unless Feature.enabled?(:limit_assignees_per_issuable)
-
       if update_params.key?(:assignee_ids)
         possible_assignees = update_params[:assignee_ids]&.uniq&.size
 
diff --git a/app/services/users/migrate_to_ghost_user_service.rb b/app/services/users/migrate_to_ghost_user_service.rb
deleted file mode 100644
index 3eb220c0e40..00000000000
--- a/app/services/users/migrate_to_ghost_user_service.rb
+++ /dev/null
@@ -1,113 +0,0 @@
-# frozen_string_literal: true
-
-# When a user is destroyed, some of their associated records are
-# moved to a "Ghost User", to prevent these associated records from
-# being destroyed.
-#
-# For example, all the issues/MRs a user has created are _not_ destroyed
-# when the user is destroyed.
-module Users
-  class MigrateToGhostUserService
-    extend ActiveSupport::Concern
-
-    attr_reader :ghost_user, :user, :hard_delete
-
-    def initialize(user)
-      @user = user
-      @ghost_user = User.ghost
-    end
-
-    # If an admin attempts to hard delete a user, in some cases associated
-    # records may have a NOT NULL constraint on the user ID that prevent that record
-    # from being destroyed. In such situations we must assign the record to the ghost user.
-    # Passing in `hard_delete: true` will ensure these records get assigned to
-    # the ghost user before the user is destroyed. Other associated records will be destroyed.
-    # letting the other associated records be destroyed.
-    def execute(hard_delete: false)
-      @hard_delete = hard_delete
-      transition = user.block_transition
-
-      # Block the user before moving records to prevent a data race.
-      # For example, if the user creates an issue after `migrate_issues`
-      # runs and before the user is destroyed, the destroy will fail with
-      # an exception.
-      user.block
-
-      begin
-        user.transaction do
-          migrate_records
-        end
-      rescue Exception # rubocop:disable Lint/RescueException
-        # Reverse the user block if record migration fails
-        if transition
-          transition.rollback
-          user.save!
-        end
-
-        raise
-      end
-
-      user.reset
-    end
-
-    private
-
-    def migrate_records
-      return if hard_delete
-
-      migrate_issues
-      migrate_merge_requests
-      migrate_notes
-      migrate_abuse_reports
-      migrate_award_emoji
-      migrate_snippets
-      migrate_reviews
-    end
-
-    # rubocop: disable CodeReuse/ActiveRecord
-    def migrate_issues
-      batched_migrate(Issue, :author_id)
-      batched_migrate(Issue, :last_edited_by_id)
-    end
-    # rubocop: enable CodeReuse/ActiveRecord
-
-    # rubocop: disable CodeReuse/ActiveRecord
-    def migrate_merge_requests
-      batched_migrate(MergeRequest, :author_id)
-      batched_migrate(MergeRequest, :merge_user_id)
-    end
-    # rubocop: enable CodeReuse/ActiveRecord
-
-    def migrate_notes
-      batched_migrate(Note, :author_id)
-    end
-
-    def migrate_abuse_reports
-      user.reported_abuse_reports.update_all(reporter_id: ghost_user.id)
-    end
-
-    def migrate_award_emoji
-      user.award_emoji.update_all(user_id: ghost_user.id)
-    end
-
-    def migrate_snippets
-      snippets = user.snippets.only_project_snippets
-      snippets.update_all(author_id: ghost_user.id)
-    end
-
-    def migrate_reviews
-      batched_migrate(Review, :author_id)
-    end
-
-    # rubocop:disable CodeReuse/ActiveRecord
-    def batched_migrate(base_scope, column, batch_size: 50)
-      loop do
-        update_count = base_scope.where(column => user.id).limit(batch_size).update_all(column => ghost_user.id)
-        break if update_count == 0
-      end
-    end
-    # rubocop:enable CodeReuse/ActiveRecord
-  end
-end
-
-Users::MigrateToGhostUserService.prepend_mod_with('Users::MigrateToGhostUserService')