There's a SQL trace file being populated every day. How can I find the routine running the trace file populating it with data?
It looks like those files are coming from the Flight Recorder monitoring feature within SSAS.

To turn it off, connect to the Analysis Services server from SSMS, go to server properties, General tab, (you might need to select Show Advanced (All) Properties, and change the value under Log -> FlightRecorder -> Enabled to false.