make_chroot: drop support for .cros_chroot_init

Doesn't seem like a commonly used feature as it only runs once when
creating a new chroot which isn't a common flow (most people do it
once and leave it at that.  Lets drop it.  People who want to tweak
their SDK can still do so with `cros_sdk -- ...` manually.

BUG=None
TEST=CQ passes

Change-Id: I654128ef29c5801bd37e0d556e83af12faeab563
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosutils/+/1966380
Reviewed-by: Alex Klein <saklein@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
1 file changed