BAU: remove unused jQuery UJS library
BAU: remove unused jQuery UJS library

This is shipped with jquery-rails: it binds Rails’s helper methods through to the frontend. We’re not using any of the helpers currently and I don’t see us using them in future (we have dedicated per-page Javascript for that).

This saves us 25Kb unminified and un-gzipped.

Author: da39a3ee5e6b4b0d3255bfef95601890afd80709@robinwhittleton
alphagov/verify-frontend,alphagov/verify-frontend,alphagov/verify-frontend,alphagov/verify-frontend