Remove redundant link to download document

There's a link next to it that does the exact same thing and includes
the word "download", which was confusing in some cases since people
might think that links with different texts lead to different pages.

app/components/admin/poll/questions/answers/documents/index_component.html.erb

@@ -36,7 +36,7 @@
       <% documents.each do |document| %>
         <tr>
           <td>
-            <%= link_to document.title, document.attachment %>
+            <%= document.title %>
           </td>
           <td>
             <%= render Admin::Poll::Questions::Answers::Documents::TableActionsComponent.new(document) %>