No error message for untagging a cookie don't exist

The skDestroyListener tries to untag every single socket get destroyed
and most of them do not have any tag information. We should ignore those
ENOENT errors otherwise the trafficController error message will flood
the logcat.

Test: device boot and no error message for ENOENT error in untag socket.
Bug: 111441138
Change-Id: I66a3bc8ee4b049359cd783149c511ace0b38240f
1 file changed