info: allow NoSuchProjectError to bubble up

If the user passes in bad projects like `repo info asdf`, we currently
silently swallow those and do nothing.  Allow NoSuchProjectError to
bubble up to main which will handle & triage this correctly for us.

Change-Id: Ie04528e7b7a164293063a636813a73eaabdd5bc3
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/239238
Reviewed-by: David Pursehouse <dpursehouse@collab.net>
Tested-by: Mike Frysinger <vapier@google.com>