ssh_client: drop old code

This has been migrated (with full history) to the apps/libapps/ repo.

BUG=None
TEST=precq passes

Change-Id: I473c55c46a9108a1cfad3ebdfa9c7fcad2d71988
Reviewed-on: https://chromium-review.googlesource.com/472268
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
32 files changed