Simplify puma config

config/puma.rb

@@ -3,21 +3,10 @@ threads threads_count, threads_count
 
 env = ENV.fetch 'RAILS_ENV', 'development'
 environment env
-
-unless Rails.root
-	module Rails
-		ROOT = Dir.pwd
-
-		def self.root
-			ROOT
-		end
-	end
-end
-
 workers ENV.fetch('WORKER', 4).to_i
 
 if env == 'production'
-	listen = ENV.fetch('LISTEN') { 'unix://' + File.join(Rails.root, 'tmp/sockets/puma.sock') }
+	listen = ENV.fetch('LISTEN') { 'unix://' + File.join(Dir.pwd, 'tmp/sockets/puma.sock') }
 	port   = ENV['PORT']
 else
 	listen = ENV['LISTEN']
@@ -27,6 +16,6 @@ end
 port(port) if port
 bind listen if listen
 
-pidfile File.join Rails.root, 'tmp/pids/puma.pid'
+pidfile File.join Dir.pwd, 'tmp/pids/puma.pid'
 
 plugin :tmp_restart