https://support.microsoft.com/en-us/topic/kb2291697-fix-orphaned-entries-for-the-powerpivot-service-application-database-are-left-in-the-sharepoint-configuration-database-after-you-uninstall-the-powerpivot-service-application-on-a-computer-that-is-running-sql-server-2008-r2-analysis-services-8519d5f1-8833-f202-be10-38825faa150a
KB2291697 - FIX: Orphaned entries for the PowerPivot service application database are left in the...
Fixes an issue in which orphaned entries for the PowerPivot service application database are left in the Objects table of the SharePoint configuration...