I've recently started speedrunning the game and I'm usign dropmod because I want to practice full runs now, but I don't know in what category to submit my speedruns because I can't tell if the Black Knight Halberd was dropped using dropmod or not. I also can't seem to find an answer, so , if anyone knows the answer, please respond.

So if you were using the dropmod plugin built into livesplit, where it shows a bunch of potential weapon drops on loading screens... NONE of the runs are no dropmod, the droprate is just 100%, hence the mod. If you're using gadgetlemage instead, you can tell if it's a natural drop or not by seeing if the weapon actually has been dropped or not when the titanite chunk appears after BKH knight dies. If the knight only drops the chunk, it's a dropmod run, if they drop the weapon, it's natural.

The main difference between the 2 is: Dropmod changes droprate, and gadgetlemage auto-injects a BKH into your inventory if you dont get one.

And how do I remove the dropmod plugin from livesplit? It shows the modified drop chance in my load screens, I already have gadgetlemage installed, and honestly I prefer it over the plugin.

You open LiveSplit > Edit Split > SoulsSplitter settings > And set DropMod settings to none

Thanks a lot brother, good luck with your future speedruns.