phpBB 3.0: CleanTalk Uninstall Manual
To uninstall CleanTalk module from phpBB 3.0 please do the following:
Run the external installer by uninstalling and installing the module.
Select external installer to install.
Select uninstall in external installation.
Then uninstall it in Administration Control Panel.
CleanTalk is now deleted from your phpBB 3.0!