ci/debian/x86_test-vk: drop an outdated dependency

This was used by the tracing jobs, which we are not running on Mesa
anymore.

Reviewed-by: David Heidelberg <david.heidelberg@collabora.com>
Signed-off-by: Martin Roukala (né Peres) <martin.roukala@mupuf.org>
Part-of: <mesa/mesa!20956>
(cherry picked from commit d7f429cc)