eclair/utils.sh: Don't produce XML reports

Enabling them was due to a hypothesis that we might need to merge reports
from different builds, and XML seemed like the most natural format for that.
But as we found a way to "merge" different builds into the same DB by
building them sequentially in one ECLAIR session, XML reports aren't really
needed.

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: I225fed634e8fd7a109d7a49e0dfb533f3719e860
1 file changed