Revert "Fix: アカウント削除時エラーが出る問題"

This reverts commit aadde1bbaa.

app/models/concerns/account/associations.rb

@@ -19,7 +19,6 @@ module Account::Associations
     has_many :conversations, class_name: 'AccountConversation', dependent: :destroy, inverse_of: :account
     has_many :scheduled_statuses, inverse_of: :account, dependent: :destroy
     has_many :scheduled_expiration_statuses, inverse_of: :account, dependent: :destroy
-    has_many :ng_rule_histories, inverse_of: :account, dependent: :destroy
 
     # Notifications
     has_many :notifications, inverse_of: :account, dependent: :destroy

app/services/delete_account_service.rb

@@ -102,7 +102,6 @@ class DeleteAccountService < BaseService
     record_severed_relationships!
     distribute_activities!
     purge_content!
-    remove_ng_rule_history_relations!
     fulfill_deletion_request!
   end
 
@@ -274,10 +273,6 @@ class DeleteAccountService < BaseService
     @account.save!
   end
 
-  def remove_ng_rule_history_relations!
-    @account.ng_rule_histories.update_all(account_id: Account.representative.id)
-  end
-
   def fulfill_deletion_request!
     @account.deletion_request&.destroy
   end

spec/services/delete_account_service_spec.rb

@@ -83,8 +83,6 @@ RSpec.describe DeleteAccountService do
       expect { pending_follow_request.reload }.to raise_error(ActiveRecord::RecordNotFound)
       expect { pending_status.reload }.to raise_error(ActiveRecord::RecordNotFound)
       expect { fetchable_pending_status.reload }.to raise_error(ActiveRecord::RecordNotFound)
-
-      expect(ng_rule_history.account_id).to eq Account.representative.id
     end
 
     def expect_deletion_of_associated_owned_records