ci: x4xx-filesystem-test: cleanup from prior run
ci: x4xx-filesystem-test: cleanup from prior run

Signed-off-by: Michael Auchter <a2d0d096b897822cbebc630274248e0fc0a5354d@ni.com>

EttusResearch/meta-ettus,EttusResearch/meta-ettus,EttusResearch/meta-ettus,EttusResearch/meta-ettus,EttusResearch/meta-ettus,EttusResearch/meta-ettus