Allow JetPack to control your WordPress site's favicon instead of Genesis

jetpack-override-genesis-favicon.php

<?php
/**
 * The 'genesis_pre_load_favicon' filter runs at the beginning of the genesis_load_favicon() function.
 * If the value returned by that filter ends up as anything except boolean false, Genesis bails on the 
 * genesis_load_favicon() process.
 */
add_filter( 'genesis_pre_load_favicon', 'check_jetpack_site_icon_status' );
function check_jetpack_site_icon_status() {
	/**
	 * If the JetPack module is active and a JetPack Site Icon has been set,
	 * 	we'll return true. Otherwise, we return false, allowing Genesis
	 * 	to continue loading its favicon.
	 */
	return function_exists( 'jetpack_has_site_icon' ) && jetpack_has_site_icon();
}