You can find the removal instructions in the readme file included in the zip.

Quote Originally Posted by readme.txt
[Removal Instructions]
In the event you do not wish to continue using the MVPS HOSTS file, you can simply delete the
existing HOSTS file and rename HOSTS.MVP to HOSTS (no 3-letter extension)
Note: none of the included files make any changes to the Registry or install any additional
files to the Operating System.
I've checked the .bat file, and don't see any changes to the registry, or any application instal files, so that is why a restore point won't fix it, the windows restore mainly only reverts registry changes and dll's, to prevent loss of user data.