Remove RepoCommit::commiter_name, commiter_email
GitLab master has these members, but 8.14 does not. So removed for now.
https://gitlab.com/gitlab-org/gitlab-ce/blob/v8.14.3/lib/api/entities.rb#L171
GitLab master has these members, but 8.14 does not. So removed for now.
https://gitlab.com/gitlab-org/gitlab-ce/blob/v8.14.3/lib/api/entities.rb#L171