Revert all changes introduced by https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/6043

CHANGELOG

app/controllers/projects/git_http_client_controller.rb

app/helpers/lfs_helper.rb

doc/workflow/lfs/lfs_administration.md

doc/workflow/lfs/manage_large_binaries_with_git_lfs.md

lib/api/internal.rb

lib/gitlab/auth.rb

lib/gitlab/auth/result.rb

lib/gitlab/lfs_token.rb

spec/lib/gitlab/auth_spec.rb

spec/lib/gitlab/lfs_token_spec.rb

spec/requests/api/internal_spec.rb

spec/requests/lfs_http_spec.rb