hpcc-systems/HPCC-Platform — pull request #2380 by ghalliday (2012-05-24 14:15:27+00:00)
Title: Remove code that is no longer required

A long time ago these attributes were required on the expressions to
cope with implicit relationships between SQL-like tables. That code
has now gone, so these attributes can also be removed.

Signed-off-by: Gavin Halliday