Remove the Post-Image

Hi there,

in the past, i used the following Code to remove the Post-Image:

add_action( 'wp','generate_remove_page_header' );
function generate_remove_page_header() {
    remove_action('generate_after_header','generate_featured_page_header', 10);
    remove_action('generate_before_content','generate_featured_page_header_inside_single', 10);
}

But it does no longer work.
Is there an Update of that Code?