run_chroot_version_hooks: removing unused arguments.

In preparation for porting the script to python, unused arguments
are being removed to confirm their non-use before the transition.

BUG=chromium:874988
TEST=manual, precq

Change-Id: I555837b1c2c9d159e5e6709e619a820de7110c25
Reviewed-on: https://chromium-review.googlesource.com/1216806
Commit-Ready: Alex Klein <saklein@chromium.org>
Tested-by: Alex Klein <saklein@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
1 file changed