Remove featured image with functions.php

Hey guys,

How can I make an article’s featured image disappear? I’d still like to be able to upload it in the article though, what I don’t want is it to appear on any page. I tried removing

<?php if ( has_post_thumbnail() ) : ?>
	<figure class="post-thumbnail">
		<?php the_post_thumbnail(); ?>
	</figure>
<?php endif; ?>

from my loop. However it still appears in my articles, basically because haven’t removed it from my single.php yet. But isn’t there a cleaner way of doing this? Could I add a action in my functions.php and tell it to remove the uploaded featured image?

The reason why I’d like to be able to still upload a featured image that doesn’t appear in the article is because of Jetpack and it’s Facebook sharing connection…

Any help appreciated 🙂