How to Hide Pixel Tag Manager for WooCommerce Admin Menus

function plt_hide_pixel_manager_for_woocommerce_menus() {
	//Hide "Pixel Tag Manager".
	remove_menu_page('pixel-manager');
	//Hide "Pixel Tag Manager → Pixel Settings".
	remove_submenu_page('pixel-manager', 'pixel-manager');
	//Hide "Pixel Tag Manager → Account".
	remove_submenu_page('pixel-manager', 'pixel-manager-account');
	//Hide "Pixel Tag Manager → Documentation".
	remove_submenu_page('pixel-manager', 'pixel-manager-documentation');
	//Hide "Pixel Tag Manager → Support".
	remove_submenu_page('pixel-manager', 'pixel-manager-support');
	//Hide "Pixel Tag Manager → Upgrade to Pro".
	remove_submenu_page('pixel-manager', 'pixel-manager-upgrade-pro');
	//Hide "Pixel Tag Manager → Free Vs Pro".
	remove_submenu_page('pixel-manager', 'pixel-manager-freevspro');
}

add_action('admin_menu', 'plt_hide_pixel_manager_for_woocommerce_menus', 11);

Where do I put this code?