mobos what is your threat model here? Being open source and from the GOS developers, I hardly think the camera app is one of your problems or that removing it would solve your problem with it. Maybe disabling camera access system-wide is what you need. For more critical threat models that include threat actors getting access to your OS, you'd need to tape or physically remove the camera modules.
If you simply prefer another camera app for taking photos, you might just ignore the system camera app, hide it from your custom launcher and restrict battery usage. But like @collector said, it's a system app that you don't want removed because it can cause issues.