Screpheep

So, I installed deadly reentry, but i decided I dont want to use this mod. How do I uninstall it? I deleted the folder from gamedata, but when I turn the game on again, the mod still works, Only thing that changed is that mod icon on toolbar, it is now completely white, but still works. I do not want to reinstall the game, cos I have like 20 other mods and I do not want to go through the process of downloading them all again. What should I do?