How to Hide the "Omnisend for WooCommerce 1" Admin Menu
function plt_hide_omnisend_connect_menus() {
//Hide the "Omnisend for WooCommerce 1" menu.
remove_menu_page('omnisend-woocommerce');
}
add_action('admin_menu', 'plt_hide_omnisend_connect_menus', 11);