This folder belongs to Spotlight Diagnostic Server and the content is associated with the 'Store SQL and Query Plan in Playback' option which is by default enabled.
When selected, Spotlight stores SQL query statements and plans in the Playback Database. This data will be available during playback of events and data collected in the recent past in the SQL Server | SQL Activity drilldown | Sessions page and the SQL Server | SQL Activity drilldown | Query Execution Statistics page.
When removing this folder, only the fields that contain the Store SQL and Query Plan will be removed, not the other information.
