Removing Live Config Path setting once set?

In the extensions dashboard at, I set a file name for the Live Config Path under Asset Hosting but later decided to remove it. Clearing this field and then saving doesn’t seem to do the trick. After reloading, my previous value is still there. For now, I have the Live Config Path set to a single space but it still shows up in my Manifest file with just the base URL.

Any way to remove this?