I created a mod to disable the hud in Thief: The Dark Project. You can find it here:

[url=http://hudfreegaming.wikia.com/wiki/Thief:_The_Dark_Project]http://hudfreegaming.wikia.com/wiki/Thief:_The_Dark_Project[/url]

I would recommend using the USERMODS folder. MODS folder is meant for TFix's internal use, a regular user should not tamper with it.

Thanks for letting me know. I've made the correction.