scripts: build_image: Remove ChromeOS version script execution

Remove running the ChromeOS version script. The version information is
populated by python script.

BUG=b:236396402
TEST=CQ

Cq-Depend: chromium:3712304
Change-Id: I8c09b174a5c4581cb27649f3f065c8e44590cd6f
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosutils/+/3711637
Tested-by: Ram Chandrasekar <rchandrasekar@google.com>
Commit-Queue: Ram Chandrasekar <rchandrasekar@google.com>
Reviewed-by: Cindy Lin <xcl@google.com>
1 file changed