Make commits atom feed button smaller

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/views/projects/commits/show.html.haml

@@ -17,7 +17,6 @@
   - if current_user && current_user.private_token
     = link_to namespace_project_commits_path(@project.namespace, @project, @ref, {format: :atom, private_token: current_user.private_token}), title: "Feed", class: 'prepend-left-10 btn' do
       = icon("rss")
-      Commits Feed
 
 
 %ul.breadcrumb.repo-breadcrumb