Remove old unused controllers

Author: mayorova

app/controllers/api/contents_controller.rb

@@ -792,9 +792,6 @@
             get :usage_rules
             patch :support_email
           end
-          resource :support, :only => [:edit, :update]
-          resource :content, :only => [:edit, :update]
-          resource :terms, :only => [:edit, :update]
           resources :metrics, :except => [:show] do
             resources :children, :controller => 'metrics', :only => [:new, :create]
           end
@@ -1002,8 +999,6 @@
         end
 
         resource :applications, only: [:edit, :update]
-        resource :documentation, only: [:edit, :update]
-
 
         resource :developer_portal, only: [:edit, :update]
 

app/controllers/api/supports_controller.rb

@@ -579,9 +579,6 @@ def path_to(page_name, *args) # rubocop:disable Metrics/AbcSize, Metrics/Cycloma
     when 'the settings page'
      admin_apiconfig_root_path
 
-    when 'the documentation settings page'
-      edit_admin_site_documentation_path
-
     when 'the emails settings page'
       edit_admin_site_emails_path