bcrypt/paramiko/pynacl: drop python2 from unused packages

Nothing in the tree uses these anymore, so punt them to simplify.

BUG=chromium:1007152
TEST=CQ passes

Change-Id: I3bce667d09b59739e9504777dccaebbf55b04e85
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2595715
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Keith Haddow <haddowk@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
1 file changed