heroku/heroku-buildpack-ruby — pull request #137 by Billiam (2013-08-16 05:04:08+00:00)
Title: Removed windows gemfile.lock unlinking

The current behavior affects not only .lock files originally created on windows platforms, but also those which have, at any point, been bundled on windows as well.

As ticket https://github.com/bundler/bundler/issues/635 has been resolved for 2 years, I believe this behavior can be removed.