BAU: remove now unused fingerprint_path method
BAU: remove now unused fingerprint_path method

Now that we’ve migrated the inline Fingerprint JS to the assets we no longer need the helper method.

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