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.