Remove celluloid references

actioncable/README.md

@@ -427,7 +427,7 @@ messages back and forth over the WebSocket cable connection. This dependency may
 be alleviated in the future, but for the moment that's what it is. So be sure to have
 Redis installed and running.
 
-The Ruby side of things is built on top of [faye-websocket](https://github.com/faye/faye-websocket-ruby) and [celluloid](https://github.com/celluloid/celluloid).
+The Ruby side of things is built on top of [faye-websocket](https://github.com/faye/faye-websocket-ruby) and [concurrent-ruby](https://github.com/ruby-concurrency/concurrent-ruby).
 
 
 ## Deployment

actioncable/test/connection/authorization_test.rb

@@ -10,7 +10,6 @@ class ActionCable::Connection::AuthorizationTest < ActionCable::TestCase
     end
 
     def send_async(method, *args)
-      # Bypass Celluloid
       send method, *args
     end
   end

actioncable/test/connection/base_test.rb

@@ -14,7 +14,6 @@ class ActionCable::Connection::BaseTest < ActionCable::TestCase
     end
 
     def send_async(method, *args)
-      # Bypass Celluloid
       send method, *args
     end
   end

actioncable/test/connection/cross_site_forgery_test.rb

@@ -6,7 +6,6 @@ class ActionCable::Connection::CrossSiteForgeryTest < ActionCable::TestCase
 
   class Connection < ActionCable::Connection::Base
     def send_async(method, *args)
-      # Bypass Celluloid
       send method, *args
     end
   end

actioncable/test/connection/string_identifier_test.rb

@@ -10,7 +10,6 @@ class ActionCable::Connection::StringIdentifierTest < ActionCable::TestCase
     end
 
     def send_async(method, *args)
-      # Bypass Celluloid
       send method, *args
     end
   end

actioncable/test/connection/subscriptions_test.rb

@@ -5,7 +5,6 @@ class ActionCable::Connection::SubscriptionsTest < ActionCable::TestCase
     attr_reader :websocket
 
     def send_async(method, *args)
-      # Bypass Celluloid
       send method, *args
     end
   end