Use Falcon's built-in gzip compression

Falcon already provides gzip compression via Protocol::HTTP::ContentEncoding
in its server middleware stack (server.rb:33). This operates at the protocol
level using Protocol::HTTP::Body::Deflate, which is async-aware and handles
client disconnects gracefully — no Zlib::BufError.

Author: TheOneFromNorway

config/application.rb

@@ -56,8 +56,6 @@ class Application < Rails::Application
       ] = "postgres://#{username}:#{password}@#{host}:#{port}/#{dbname}"
     end
 
-    config.middleware.use Rack::Deflater
-
     # Configuration for the application, engines, and railties goes here.
     #
     # These settings can be overridden in specific environments using the files