I recently started to get duplication issues with Citizens and Sentry. Eventually, it started to cause incredible strain on my server whenever a player was nearby and after deleting all of my config files, I couldn't find a fix, so I decided to delete both plugins until I could. I now have swarms of NPCs wherever I had any single NPC. The plugins are gone, I have reloaded several times since and I still have all of the lag whenever a player stands next to an NPC. I've checked it over and checked it over and neither plugin is active. None of the commands are recognised and they don't show in /plugins. They aren't even in the plugins directory. What can I do?