Merge branch 'pedroms/fix-diff-actions-menu' into 'master'

Fix MR file header dropdown height

See merge request gitlab-org/gitlab!43877

app/assets/stylesheets/pages/diff.scss

@@ -431,10 +431,6 @@
     margin-left: 0;
     border-left: 0;
   }
-
-  .file-actions .dropdown {
-    height: 28px;
-  }
 }
 
 table.code {