I posted this in a PM but will also post here - if you really want to remove it from your regularly used browsers then violentmonkey is your friend... install this plugin on your browser of choice...
and in the settings create a new script and copy in the code below... be sure to replace the "your hub ip address goes here" bit with your hub ip address.
// @name New script
// @namespace Violentmonkey Scripts
// @match *://*/*
// @grant none
// @version 1.0
// @author -
// @description 4/13/2021, 11:03:14 AM
case "your hub ip address goes here":
//document.body.style.backgroundColor = "lightblue";
var foo = document.querySelector("a[href^='https://shop.hubitat.com/subscriptions/']");
Note: This is a quick hack. I use a version of this violentmonkey script to change the background color on my 3 hubs as a visual way to quickly distinguish them.. the subscription entry doesn't really bother me.