form_buffers is not needed anymore, closes unmantained-activeadmin-plugins#3

Author: fabn

lib/active_admin/globalize/form_builder_extension.rb

@@ -7,7 +7,7 @@ def translated_inputs(name = "Translations", options = {}, &block)
         options.symbolize_keys!
         switch_locale = options.fetch(:switch_locale, false)
         auto_sort = options.fetch(:auto_sort, true)
-        form_buffers.last << template.content_tag(:div, class: "activeadmin-translations") do
+        template.content_tag(:div, class: "activeadmin-translations") do
           template.content_tag(:ul, class: "available-locales") do
             (auto_sort ? I18n.available_locales.sort : I18n.available_locales).map do |locale|
               default = 'default' if locale == I18n.default_locale