You can use the browser inspector (F12, then Console tab) to work out what to target.
Identify the template name - in this case 
forum_view.
View attachment 237784
Then identify the specific element - 
structItem-parts.
View attachment 237785.
Then create the code to remove it from the template.
	
	
	
		Less:
	
	
		[data-template="forum_view"]
{
    .structItem-parts
    {
        display: none;
    }
}
	 
 
Further changes may be required to make things line up properly, etc.