Remove the Jessie sysroot

R=thestig@chromium.org

Change-Id: I573a16b6ec61615c5e165c4c2476ac0e3362db51
Reviewed-on: https://chromium-review.googlesource.com/767615
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Thomas Anderson <thomasanderson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#516505}
11 files changed