IOVSvc: Remove a dependency on old EventInfo.
IOVSvcTool::handle was doing a SG retrieve of old EventInfo to find eventID data. Change to using the EventContext delivered via the incident. (Relies on the event loop setting up the context properly.)
IOVSvcTool::handle was doing a SG retrieve of old EventInfo to find eventID data. Change to using the EventContext delivered via the incident. (Relies on the event loop setting up the context properly.)