Removed unused Instances api routes from ruby

• Removed:
- unused Instances api routes from ruby

config/routes.rb

@@ -371,10 +371,6 @@ Rails.application.routes.draw do
 
       resources :apps, only: [:create]
 
-      resource :instance, only: [:show] do
-        resources :peers, only: [:index], controller: 'instances/peers'
-        resource :activity, only: [:show], controller: 'instances/activity'
-      end
 
       resource :domain_blocks, only: [:show, :create, :destroy]