Remove boolean icons from plugins page

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

app/views/shared/plugins/_index.html.haml

@@ -13,7 +13,6 @@
       %ul.content-list
         - plugins.each do |file|
           %li
-            = boolean_to_icon true
             = File.basename(file)
     - else
       %p.light-well.text-center