How to Hide WP Content Pilot Admin Menus

function plt_hide_wp_content_pilot_menus() {
	//Hide "Content Pilot".
	remove_menu_page('edit.php?post_type=wp_content_pilot');
	//Hide "Content Pilot → All Campaigns".
	remove_submenu_page('edit.php?post_type=wp_content_pilot', 'edit.php?post_type=wp_content_pilot');
	//Hide "Content Pilot → Add New".
	remove_submenu_page('edit.php?post_type=wp_content_pilot', 'post-new.php?post_type=wp_content_pilot');
	//Hide "Content Pilot → Status".
	remove_submenu_page('edit.php?post_type=wp_content_pilot', 'wpcp-status');
	//Hide "Content Pilot → Logs".
	remove_submenu_page('edit.php?post_type=wp_content_pilot', 'wpcp-logs');
	//Hide "Content Pilot → Settings".
	remove_submenu_page('edit.php?post_type=wp_content_pilot', 'wpcp-settings');
	//Hide "Content Pilot → Help".
	remove_submenu_page('edit.php?post_type=wp_content_pilot', 'wpcp-help');
	//Hide "Content Pilot → Go Pro".
	remove_submenu_page('edit.php?post_type=wp_content_pilot', 'go_wpcp_pro');
}

add_action('admin_menu', 'plt_hide_wp_content_pilot_menus', 503);
Where do I put this code?