Revert "Make NodeInfo (hs) accept arbitrary storage types"

This reverts commit
e89525a859b2e841c08fce506c0b68b97c7efe61.

Signed-off-by: Helga Velroyen <helgav@google.com>
Reviewed-by: Thomas Thrainer <thomasth@google.com>
Revert "Storage utility functions for Haskell"

This reverts commit
88d27b8aa8adc2e5ced773909f1d40812c5a6ea7.

Signed-off-by: Helga Velroyen <helgav@google.com>
Reviewed-by: Thomas Thrainer <thomasth@google.com>