Function to disable the "Choose a new subscription" message when switching a subscription item

disable_switch_notice.php

<?php
/** 
 * Function to disable the "Choose a new subscription" message when switching a subscription item
**/

add_filter('woocommerce_add_notice', 'disable_switch_notice', 10, 1);
 function disable_switch_notice( $message){
	 if($message=="Choose a new subscription."){
		 $message = '';
	 }
	 return $message;	 
 }