Merge branch 'protected-branches-show-scb' into 'master'

Resolve CE/EE diffs in protected branches show

Closes #11033

See merge request gitlab-org/gitlab-ee!12790

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

@@ -5,7 +5,7 @@
     %h4.prepend-top-0.ref-name
       = @protected_ref.name
 
-  .col-lg-9.edit_protected_branch
+  .col-lg-9
     %h5 Matching Branches
     - if @matching_refs.present?
       .table-responsive