Remove regenerated images

Good day.
When you load an image, WordPress regenerates copies of it in different sizes. Most of them I don’t need. I disabled them using code.

function shapeSpace_disable_image_sizes($sizes) {
	unset($sizes['thumbnail']);    // отключение миниатюр
	return $sizes;
}
add_action('intermediate_image_sizes_advanced', 'shapeSpace_disable_image_sizes');

But I can’t figure out how to turn off the size 100×100?
Can you give me a name for this size or an alternative way to remove it?

• This topic was modified 4 years, 3 months ago by ilyapokrov.