add_filter( 'streamtube/core/mycred/public_point_types', function( $point_types ){

    $custom_point_type = 'my-point';

    if( array_key_exists( $custom_point_type, $point_types ) ){
        unset( $point_types[ $custom_point_type ] );
    }

    return $point_types;

}, 10, 1 );