The Threat Intelligence Solution Pack in previous versions of Sentinel includes data sources such as Palevo tracker and ZeuS tracker. The option to schedule downloads and manage these data feeds was available in the Plug-ins > Feeds user interface. Starting from Sentinel 8.1, the option to manage these threat intelligence data sources is available in the Integration > Threat Intelligence Sources user interface. Sentinel adds these data sources by default. You just need to schedule the download interval for these data sources.
You can uninstall the previously installed Palevo and Zeus feed plug-ins in the Plug-ins > Catalog user interface.