I'll give it a shot, thanks a ton if it works, I know the sound is to notify me that "hey your below half stamina" but its always annoyed the hell out of me.
Didn't work, nor did removing the entry from the xml manually either.
The sound removal of panting isnt only linked to entityclasses.xml it would need to be removed from sounds and also archetypes xmls and maybe a few other xmls let me do some digging to find the rest of the refrenced areas for the panting sounds.