xml: remove dependency to ui element from the module source

xml: remove dependency to ui element from the module source

The TmfXmlAnalysisOutputSource class is now advertised with the 'listener'
element of the analysis extension point.

Change-Id: I7ac2be77774f029e29eabd643e6fd891317bd898
Signed-off-by: Geneviève Bastien <gbastien+lttng@versatic.net>
Reviewed-on: https://git.eclipse.org/r/65115
Reviewed-by: Hudson CI
Reviewed-by: Marc-Andre Laperle <marc-andre.laperle@ericsson.com>
Tested-by: Marc-Andre Laperle <marc-andre.laperle@ericsson.com>