Go to your toribash folder > data
Then find the folder named eki27 and delete it.
Go ingame and type /dl eki27
Should be gone.
This bug also happens to other sounds, fpt and joint textures if I remember correctly.
Toribash -> data -> customs*
Ek; it won't reactivate, it will just clear it from your custom folder and the /dl command will reload your activated items on your tori. So as long as you don't reactivate your hitsound it won't play.
"I like to visualise icky in the astral realm fighting off the spambots (alien-robot hybrid species) singlehandedly and trying to scan their brains to find out which evil mastermind is sending them" ~ rola