diff --git a/app/serializers/user_auth_token_log_serializer.rb b/app/serializers/user_auth_token_log_serializer.rb
deleted file mode 100644
index 0a676f8c7c1..00000000000
--- a/app/serializers/user_auth_token_log_serializer.rb
+++ /dev/null
@@ -1,18 +0,0 @@
-# frozen_string_literal: true
-
-class UserAuthTokenLogSerializer < ApplicationSerializer
-  include UserAuthTokensMixin
-
-  attributes :action
-
-  def action
-    case object.action
-    when 'generate'
-      I18n.t('log_in')
-    when 'destroy'
-      I18n.t('unsubscribe.log_out')
-    else
-      I18n.t('staff_action_logs.unknown')
-    end
-  end
-end