removes duplicate entry of Jamie Macey
removes duplicate entry of Jamie Macey

maclover7/rails-contributors,fxn/rails-contributors,gitlabhq/gitlab-contributors,gitlabhq/gitlab-contributors,maclover7/rails-contributors,fxn/rails-contributors,amitsuroliya/rails-contributors,gitlabhq/gitlab-contributors,maclover7/rails-contributors,amitsuroliya/rails-contributors,gitlabhq/gitlab-contributors,maclover7/rails-contributors,fxn/rails-contributors,amitsuroliya/rails-contributors,fxn/rails-contributors,amitsuroliya/rails-contributors