Remove XML-RPC code from html

How can I remove XML-RPC code completely from front-end? I searched about it found few codes but none of them actually removed the code.

add_filter( 'xmlrpc_enabled', '__return_false' );

function disable_x_pingback( $headers ) {
    unset( $headers['X-Pingback'] );
	return $headers;
}add_filter( 'wp_headers', 'disable_x_pingback' );