Disable live tracing feature

Disable live tracing feature

The Live Tracing feature is quite limited and error prone. Some
of the shortcomings are documented in bug 486728. Since there are no
short term plans to improve this in Neon, perhaps it is better to
disable this for now.

Change-Id: Iaf6cab29ce55fde58296aab9935d220eee29a297
Signed-off-by: Marc-Andre Laperle <marc-andre.laperle@ericsson.com>
Reviewed-on: https://git.eclipse.org/r/69285
Reviewed-by: Hudson CI
Reviewed-by: Jonathan Rajotte Julien <jonathan.rajotte-julien@efficios.com>
Reviewed-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Tested-by: Bernd Hufmann <bernd.hufmann@ericsson.com>