This article shares the process for removing external search facets, as seen in the screenshot below, from Spotlight and Advanced searches:
Jive Interactive Intranet-Jive Core-AWS
To remove external search facets from the Spotlight and Advanced search, create a support case to update the status of Tile Stream Manager system property in your instance as seen here:
TileStreamManager.enabled = false.
Only the non-Jive content facet of External Activity displays in the Spotlight and Advanced searches, as seen below.