[ROLLBACK] Remove dependency on _array variables which will be rolled back shortly


git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@52942 b456876b-0849-0410-b77d-98878d47e9d5
[ROLLBACK] Revert r52636 that added _array stuff into search index for multivalue fields as it should not be needed - because if it is not working there is a bug that should be fixed in another way (after discussion with LP)


git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@52943 b456876b-0849-0410-b77d-98878d47e9d5