Remove __cxa_thread_atexit_impl sysroot hack

This CL reverts the changes in sysroot-creator.sh and
rolls the sysroots forward to reflect the change.

BUG=749077
R=thestig@chromium.org

Change-Id: Ia9ba4427666dbf9268138f7ec7a2f77df70a172f
Reviewed-on: https://chromium-review.googlesource.com/596419
Commit-Queue: Thomas Anderson <thomasanderson@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#491148}
2 files changed