How to remove app shortcut from home screen (modded trebuchet launcher) after installing as system app

This tablet is proprietary, so the launcher is custom (modded trebuchet) and very limited. It runs Android 8.1. I was able to get apex launcher installed, along with root access, but I'm trying to avoid using a third-party launcher because if I rename it with app cloner it tends to glitch out. The goal is for my exploit of this tablet to be as undetectable as possible, which is why I am renaming all apps I've installed. I noticed that system apps don't show up on the stock launcher home screen, and since I can't use apex or some other launcher, I figured I would install all my wanted apps (Facebook, telegram, etc...) as system apps. I was able to install them as system apps with lucky patcher, however they still show on the home screen.. Any ideas for how I can modify the system under the hood, or otherwise, and keep these apps from showing on the stock (modded trebuchet) launcher?