How to Hide OriginCode Photo Gallery Admin Menus

function plt_hide_photo_contest_menus() {
	//Hide "Photo Gallery WP".
	remove_menu_page('origincode_photo_gallery_wp_gallery');
	//Hide "Photo Gallery WP → Galleries".
	remove_submenu_page('origincode_photo_gallery_wp_gallery', 'origincode_photo_gallery_wp_gallery');
	//Hide "Photo Gallery WP → General Options".
	remove_submenu_page('origincode_photo_gallery_wp_gallery', 'origincode_photo_gallery_wp_general_options');
	//Hide "Photo Gallery WP → Lightbox Options".
	remove_submenu_page('origincode_photo_gallery_wp_gallery', 'origincode_photo_gallery_wp_lightbox_options');
	//Hide "Photo Gallery WP → Albums PRO".
	remove_submenu_page('origincode_photo_gallery_wp_gallery', 'origin_code_ph_gallery_albums');
}

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

Where do I put this code?