Hide Jetpack and disable direct access

functions.php

function ap_remove_jetpack_page( ) {
    if ( class_exists( 'Jetpack' ) && !current_user_can( 'manage_options' ) ) {
        remove_menu_page( 'jetpack' );
    }
}
add_action( 'admin_menu', 'ap_remove_jetpack_page', 999 );

add_action( 'admin_init', 'restrict_page' );
function restrict_page() {
    if ( class_exists( 'Jetpack' ) && !current_user_can( 'manage_options' ) ) {
        if ( isset( $_GET['page'] ) && $_GET['page'] == 'jetpack' ) {
            wp_die( 'no access' );
        }
    }
}