build_image: drop vi symlink on dev images

We've been installing vim into base images for years, so this vi->vim
symlink isn't used.  Lets drop it to reduce the amount of dev image
specific hacking we do.

BUG=None
TEST=precq passes

Change-Id: I0daa6a8d8e0a21f80012ba69a0a0ce9fd4e2d61a
Reviewed-on: https://chromium-review.googlesource.com/1485292
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Ned Nguyen <nednguyen@google.com>
1 file changed