cros_make_image_bootable: remove arm_extra_bootargs argument

The argument `arm_extra_bootargs` is unused in this script.

Rely on CQ to catch any critical callers expecting to be able to use it.

BUG=None
TEST=CQ

Change-Id: I4aa35b5247add82634618cc1d4117ed857a6d4a9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosutils/+/4545943
Tested-by: Jeffery Miller <jefferymiller@google.com>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Jeffery Miller <jefferymiller@google.com>
1 file changed