How to Hide KVS Player Admin Menus

function plt_hide_kvs_flv_player_menus() {
	//Hide the "KVS Player" menu.
	remove_menu_page('kvs_player');
	//Hide the "KVS Player → KVS Player" menu.
	remove_submenu_page('kvs_player', 'kvs_player');
	//Hide the "KVS Player → Get KVS Player Pro" menu.
	remove_submenu_page('kvs_player', 'kvs_player_upgrade_to_premium');
}

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

Where do I put this code?