How to Hide Site Reviews Admin Menus

function plt_hide_site_reviews_menus() {
	//Hide "Tools → Scheduled Actions".
	remove_submenu_page('tools.php', 'action-scheduler');

	//Hide "Site Reviews".
	remove_menu_page('edit.php?post_type=site-review');
	//Hide "Site Reviews → All Reviews".
	remove_submenu_page('edit.php?post_type=site-review', 'edit.php?post_type=site-review');
	//Hide "Site Reviews → Categories".
	remove_submenu_page('edit.php?post_type=site-review', 'edit-tags.php?taxonomy=site-review-category&post_type=site-review');
	//Hide "Site Reviews → Settings".
	remove_submenu_page('edit.php?post_type=site-review', 'glsr-settings');
	//Hide "Site Reviews → Tools".
	remove_submenu_page('edit.php?post_type=site-review', 'glsr-tools');
	//Hide "Site Reviews → Addons".
	remove_submenu_page('edit.php?post_type=site-review', 'glsr-addons');
	//Hide "Site Reviews → Help & Support".
	remove_submenu_page('edit.php?post_type=site-review', 'glsr-documentation');
}

add_action('admin_menu', 'plt_hide_site_reviews_menus', 11);
Where do I put this code?