How to declutter admin columns

Admin columns can be shown/hidden by using the Screen Options menu. Here, the custom column Headline news is being hidden using the UI:

Toggle admin columns

Alternatively, Admin Columns can be unset (and therefore hidden) programmatically:

add_filter( 'manage_post_posts_columns', 'wpse_hide_columns', PHP_INT_MAX, 1 );
function wpse_hide_columns( $columns ) {
    // Check for the name of the column, and unset it if it exits.
    if ( isset( $columns['headline_news'] ) ) {
        unset( $columns['headline_news'] );
    }

    return $columns;
}