Remove unused code path introduced in #3623.
Remove unused code path introduced in #3623.

vraravam/activeadmin,mrjman/activeadmin,wspurgin/activeadmin,activeadmin/activeadmin,mrjman/activeadmin,activeadmin/activeadmin,mrjman/activeadmin,vraravam/activeadmin,mauriciopasquier/active_admin,siutin/activeadmin,siutin/activeadmin,deivid-rodriguez/activeadmin,javierjulio/activeadmin,activeadmin/activeadmin,siutin/activeadmin,mauriciopasquier/active_admin,wspurgin/activeadmin,mauriciopasquier/active_admin,javierjulio/activeadmin,vraravam/activeadmin,deivid-rodriguez/activeadmin,deivid-rodriguez/activeadmin,wspurgin/activeadmin,javierjulio/activeadmin