Organisations now have their acronyms indexed

They are no longer included in the title and are indexed separately, so we don't need this code to fudge it. See:
https://github.com/alphagov/rummager/commit/97d354eab40031c8d0ad3a36b4b27fdb973f48b4
https://github.com/alphagov/whitehall/commit/901e552e87b16adf14dfa8d056c8c16e6ab44827
https://github.com/alphagov/whitehall/commit/428366cf7295568f2363342a5d33016f57422058