Remove mail templates feature as buggy and unused

config/locales/admin/mail_templates.en.yml

@@ -1,5 +0,0 @@
-en:
-  admin:
-    mail_templates:
-      html_body: HTML body
-      new_mail_template: New mail template

config/locales/en.yml

@@ -660,7 +660,6 @@ en:
   created_at_until: 'Created at until'
   is_registrant: 'Is registrant'
   force_delete_set_on_domain: 'Force delete set on domain %{domain_name}'
-  mail_templates: Mail Templates
   contact_is_not_valid: 'Contact %{value} is not valid, please fix the invalid contact'
   next: 'Next'
   previous: 'Previous'

config/routes.rb

@@ -186,7 +186,6 @@ Rails.application.routes.draw do
       end
     end
 
-    resources :mail_templates
     resources :account_activities
 
     resources :bank_statements do