enter_chroot: drop --workspace_root support

In the brillo days, we had separate workspaces for each product.  But
that concept is long dead and the code has (mostly) been deleted, so
drop this command line flag too.

BUG=chromium:934975
TEST=precq passes

Change-Id: Ia1d1037525a5b5f2341e336f12952ef433fbd520
Reviewed-on: https://chromium-review.googlesource.com/1495916
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Alex Klein <saklein@chromium.org>
1 file changed