You can follow the instructions below to hide the number of replies from the topics page:

1. Log in to your Website Toolbox account.
2. Click the Integrate link in the main menu.
3. Click the Custom Code link.
4. Copy the HTML code below into the Forum Head Tag HTML Code text box.
   

   <style>
   .topics-list .panel-body > ul > li .mod [id^="reply_count_"] {
   	display: none !important;
   }
   </style>

5. Save the changes.