Wordpress, need to remove thumbnail?

Question

WordPress

Tell me how to remove this thumbnail on the left? Immediately after adding the news, the thumbnail selects its size, I added three different news, each had a different size thumbnail

Answer 1

duplicate
wordpress remove thumbnail?

Answer 2

so in the settings of the post itself) as far as I remember, you can turn off the thumbnail))

Answer 3

post_thumbnail is responsible for the output, find a similar one and delete it<?php if ( has_post_thumbnail()) : ?>