Only way I could see to do this is follow this old SAP note http://service.sap.com/sap/support/notes/1971692
rename your analysis-config folder
rename your analysis-workspace folder
The URL's are gone
But CAUTION - anything locally is in the old workspace folder is gone too. I would only try this in TEST/DEV mode - and then if you are comfortable do it for real - maybe restore back the workspace folder after your URL's are good.