small fix

app/views/admin/tickets/_response.html.erb

@@ -44,7 +44,7 @@
               <img class="t-avatar <%= response.read_by.include?(user.id.to_s) ? "read" : "" %>" src="<%= avatar %>" data-avatar-id="<%= user.id.to_s %>">
               <span class="ticket-tag-member-name tool-tip right"><%= user.name rescue ""%></span>
             <% else %>
-              <img class="t-avatar" src="<%= avatar %>" data-avatar-id="<%= user.id.to_s %>">
+              <img class="t-avatar" src="<%= avatar %>">
               <span class="ticket-tag-member-name tool-tip right"><%= user.name rescue "Member was deleted"%></span>
             <% end %>
           </div>