How to uninstall this mod

I had installed this mod early on https://www.nexusmods.com/baldursgate3/mods/18328 and want to uninstall it now, but the mod is hidden on nexus and I can't find how I had installed it. It's not on the mod manager in game's main menu and it's not on bg3modmanager either. It must have been something copy-paste into whatever game file but can't remember! Does anyone know?