/**
 * Completely remove jQuery Migrate from the front-end
 */
add_action('wp_default_scripts', function($scripts) {
    if (!is_admin() && !empty($scripts->registered['jquery'])) {
        $jquery_dependencies = $scripts->registered['jquery']->deps;
        
        // Target: 'jquery-migrate'
        $scripts->registered['jquery']->deps = array_diff(
            $jquery_dependencies, 
            array('jquery-migrate')
        );
    }
});