common.sh: drop sudo_append

The only user of this has grown its own copy now, so delete it.

BUG=None
TEST=CQ passes

Change-Id: I66cbdd3069272774a9a8d77f909488924ecb6915
Reviewed-on: https://chromium-review.googlesource.com/1764948
Tested-by: Mike Frysinger <vapier@chromium.org>
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Legacy-Commit-Queue: Commit Bot <commit-bot@chromium.org>
Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
1 file changed