AO3-7465 Allow Rails to manage YJIT default (#5805)

Allow Rails to manage YJIT default

Author: nateberkopec

config/application.rb

@@ -149,9 +149,6 @@ class Application < Rails::Application
 
     config.active_storage.web_image_content_types = %w[image/png image/jpeg image/gif]
 
-    # Do not enable YJIT automatically once we upgrade to Ruby 3.3
-    config.yjit = false
-
     # Use secret from archive config
     config.secret_key_base = ArchiveConfig.SESSION_SECRET
   end