Omit request and response from output

This avoids recursion while trying to serialise Request and Response
objects

Author: ball-hayden

lib/rails_semantic_logger/action_controller/log_subscriber.rb

@@ -38,8 +38,12 @@ def process_action(event)
           end
 
           payload[:status_message] = ::Rack::Utils::HTTP_STATUS_CODES[payload[:status]] if payload[:status].present?
+
           # Causes excessive log output with Rails 5 RC1
           payload.delete(:headers)
+          # Causes recursion in Rails 6.1.rc1
+          payload.delete(:request)
+          payload.delete(:response)
 
           params = payload[:params]
           if params