agerard 65681 - Tuesday, January 9, 2018 4:20 PM
I'd try one of the supported methods first.
If you use the web service and SOAP API, you can call the DeleteSubscription method in an app or just write an rss file to use with rs.exe.
Using Powershell would be faster - download and import the ReportingServicesTools module and then just use the Remove-RsSubscription cmdlet.
Sue