How to Hide Guild Raid Progression for WoW and Raider IO Admin Menus

function plt_hide_guild_raid_progression_for_wow_and_raider_io_menus() {
	//Hide "WoW Raid Progression".
	remove_menu_page('wow-raid-progression');
	//Hide "WoW Raid Progression → WoW Raid Progression".
	remove_submenu_page('wow-raid-progression', 'wow-raid-progression');
	//Hide "WoW Raid Progression → Contact Us".
	remove_submenu_page('wow-raid-progression', 'wow-raid-progression-contact');
	//Hide "WoW Raid Progression → Upgrade".
	remove_submenu_page('wow-raid-progression', 'wow-raid-progression-pricing');
}

add_action('admin_menu', 'plt_hide_guild_raid_progression_for_wow_and_raider_io_menus', 1000000000);

Where do I put this code?