no more inheritance

lib/travis/api/app.rb

@@ -125,7 +125,7 @@ module Travis::Api
         use Travis::Api::App::Middleware::Metriks
 
         # make sure this is below ScopeCheck so we have the token
-        use Travis::Api::Attack
+        use Rack::Attack
 
         # if this is a v3 API request, ignore everything after
         use Travis::API::V3::OptIn

lib/travis/api/attack.rb

@@ -1,10 +1,7 @@
 require 'rack/attack'
 
-module Travis::Api
-  class Attack < Rack::Attack
-    DalliProxy = Rack::Attack::DalliProxy # ?
-
-    module Request
+class Rack::Attack
+  module RequestMixin
     TOKEN = 'travis.access_token'.freeze
     Rack::Attack::Request.prepend(self)
 
@@ -68,5 +65,4 @@ module Travis::Api
   else
     cache.store = ActiveSupport::Cache::MemoryStore.new
   end
-  end
 end