If you are referring to the front end of your site:
You can use CSS to hide it.
Themes handle the comment display (unless you choose a plugin that does), but most use the core code for it. Some write their own comment handler.
You could use a small javascript to remove it, even depending on the number.
If you are referring to the back end of your site:
You might find a plugin that shows it differently, or a plugin that loads some CSS in the admin that you could change.
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