Unregister post type

gistfile1.txt

<?php
/*
 *
 * Usage for the built in 'post' post type:
 * unregister_post_type( 'post', 'edit.php' );
*/
function deregister_post_type() {
    global $wp_post_types;
    $post_type = 'post';
    if ( isset( $wp_post_types[ $post_type ] ) ) {
        unset( $wp_post_types[ $post_type ] );
        return true;
    }
    return false;
}
add_action('init', 'deregister_post_type');
?>