Revert message bus upgrade

config/initializers/001-redis.rb

@@ -1,15 +0,0 @@
-if Rails.env.development? && ENV['DISCOURSE_FLUSH_REDIS']
-  puts "Flushing redis (development mode)"
-  $redis.flushall
-end
-
-if defined?(PhusionPassenger)
-    PhusionPassenger.on_event(:starting_worker_process) do |forked|
-        if forked
-            Discourse.after_fork
-        else
-            # We're in conservative spawning mode. We don't need to do anything.
-        end
-    end
-end
-