This action removes the SQL Server Analysis Services (PowerPivot) instance and the PowerPivot System Service from the farm. ...

This action removes the SQL Server Analysis Services (PowerPivot) instance and the PowerPivot System Service from the farm. If you have other PowerPivot for SharePoint servers in the farm, they will continue to work. This action only removes information from the SharePoint configuration database. Program files will remain on the server after this action is performed. To remove the program files, run SQL Server Setup to unintall the software.