You can easily revert a hotfix, as follows:
- Click on Admin
- Scroll to the bottom of the page
- Click on the hotfix you want to revert
- Click revert hotfix
The intranet will restart to revert the changes from the hotfix.
It's only possible to revert a patch if you've taken a full backup of the files and database prior to installing the patch.
To revert a patch, restore the backups of the files and the database taken before the patch was applied, using the Restore the Intranet article.