Unregister your app as a client entity with the BlackBerry Hub.
#include "bb/pim/unified/unified_data_source.h"
int uds_unregister_client(uds_context_t handle)
BlackBerry 10.2.0
The handle that's associated with your app's registration with the BlackBerry Hub.
This function unregisters your app with the BlackBerry Hub, after which your app is no longer eligible to add and manipulate BlackBerry Hub data.
UDS_SUCCESS if your app was unregistered successfully, or a non-zero error code on failure. See uds_error_code_t or errno.h for details.