Fix: sessiond: error reported on session destruction for old modules

Fix: sessiond: error reported on session destruction for old modules

The session destruction command will return
-LTTNG_ERR_ROTATION_NOT_AVAILABLE_KERNEL when the kernel tracer
version does not support packet sequence numbers which prevents
rotations from being performed.

It is okay to not perform an implicit rotation in this case since we
know that no rotations have occurred during the session's lifetime (as
it is not supported). Thus, the client/library only needs to stop the
session, wait for pending data, and destroy the session.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ibccf73f08eecb6431ea3cc358bf8dd6af3ba4427