Fix: NGワード設定画面のエラー

app/controllers/system_css_controller.rb

@@ -1,16 +1,8 @@
 # frozen_string_literal: true
 
 class SystemCssController < ActionController::Base # rubocop:disable Rails/ApplicationController
-  before_action :set_user_roles
-
   def show
     expires_in 3.minutes, public: true
     render content_type: 'text/css'
   end
-
-  private
-
-  def set_user_roles
-    @user_roles = UserRole.providing_styles
-  end
 end