tmf: Remove jars.extra.classpath entries in xml.ui.swtbot.tests

It should not be there.

Signed-off-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Change-Id: I4e183825049f8907662a473016e090eef6de552c
Reviewed-on: https://git.eclipse.org/r/c/tracecompass/org.eclipse.tracecompass/+/205542
Tested-by: Patrick Tasse <patrick.tasse@gmail.com>
Tested-by: Trace Compass Bot <tracecompass-bot@eclipse.org>
Reviewed-by: Patrick Tasse <patrick.tasse@gmail.com>
Reviewed-by: Matthew Khouzam <matthew.khouzam@ericsson.com>

tmf/org.eclipse.tracecompass.tmf.analysis.xml.ui.swtbot.tests/build.properties

@@ -18,5 +18,3 @@ bin.includes = META-INF/,\
                plugin.properties,\
                about.html
 src.includes = about.html
-jars.extra.classpath = target/org.eclipse.tracecompass.tmf.analysis.xml.ui.swtbot.tests-1.0.1-SNAPSHOT.jar,\
-                       target/org.eclipse.tracecompass.tmf.analysis.xml.ui.swtbot.tests-1.0.1-SNAPSHOT-sources.jar