Remove ActionCable

Author: faqndo97

test/dummy/app/channels/application_cable/channel.rb

@@ -1,6 +1,13 @@
 require_relative "boot"
 
-require "rails/all"
+require "active_model/railtie"
+require "active_job/railtie"
+require "active_record/railtie"
+require "action_controller/railtie"
+require "action_mailer/railtie"
+require "action_view/railtie"
+require "sprockets/railtie"
+require "rails/test_unit/railtie"
 
 # Require the gems listed in Gemfile, including any gems
 # you've limited to :test, :development, or :production.