Removed unused Instances api routes from ruby

• Removed:
- unused Instances api routes from ruby

app/controllers/api/v1/instances/activity_controller.rb

@@ -1,38 +0,0 @@
-# frozen_string_literal: true
-
-class Api::V1::Instances::ActivityController < Api::BaseController
-  before_action :require_enabled_api!
-  skip_before_action :set_cache_headers
-
-  respond_to :json
-
-  def show
-    render json: {}, content_type: 'application/json'
-  end
-
-  private
-
-  def activity
-    weeks = []
-
-    12.times do |i|
-      day     = i.weeks.ago.to_date
-      week_id = day.cweek
-      week    = Date.commercial(day.cwyear, week_id)
-
-      weeks << {
-        week: week.to_time.to_i.to_s,
-        statuses: Redis.current.get("activity:statuses:local:#{week_id}") || '0',
-        #(Rjc) 2019-07-02: Make this an instance option in Admin panel
-        # logins: 0, # Redis.current.pfcount("activity:logins:#{week_id}").to_s,
-        registrations: Redis.current.get("activity:accounts:local:#{week_id}") || '0',
-      }
-    end
-
-    weeks
-  end
-
-  def require_enabled_api!
-    head 404 unless Setting.activity_api_enabled
-  end
-end

app/controllers/api/v1/instances/peers_controller.rb

@@ -1,18 +0,0 @@
-# frozen_string_literal: true
-
-class Api::V1::Instances::PeersController < Api::BaseController
-  before_action :require_enabled_api!
-  skip_before_action :set_cache_headers
-
-  respond_to :json
-
-  def index
-    render json: {}, content_type: 'application/json'
-  end
-
-  private
-
-  def require_enabled_api!
-    head 404 unless Setting.peers_api_enabled
-  end
-end

app/controllers/api/v1/instances_controller.rb

@@ -1,10 +0,0 @@
-# frozen_string_literal: true
-
-class Api::V1::InstancesController < Api::BaseController
-  respond_to :json
-  skip_before_action :set_cache_headers
-
-  def show
-    render json: {}, content_type: 'application/json'
-  end
-end

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]