tests: Remove stale tests launcher

tests: Remove stale tests launcher

Those 2 unused test launcher scripts were accidentaly commited when the
test suite was reworked.

Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Change-Id: Iadcddf7b91acd021298bee68d14985924f3244b8
Reviewed-on: https://review.lttng.org/c/babeltrace/+/1625
Reviewed-by: Francis Deslauriers <francis.deslauriers@efficios.com>
Reviewed-by: Philippe Proulx <eeppeliteloop@gmail.com>
CI-Build: Francis Deslauriers <francis.deslauriers@efficios.com>
Tested-by: jenkins <jenkins@lttng.org>