LP#1482757: Remove 'orphaned_uri_list' and 'NOT cn.deleted' criteria

LP#1482757: Remove 'orphaned_uri_list' and 'NOT cn.deleted' criteria

Per Dan Wells' suggestions.

1) One possible "crack" I see for data to fall through is the dead map
selector. The "AND cn.label = '##URI##' AND NOT cn.deleted" seems overly
restrictive. Now, I realize we *shouldn't* have mappings to deleted or
non-##URI## call numbers, but it isn't impossible, and I don't think we'd
have harm in leaving those restrictions out. If a map isn't used, let's
get rid of it regardless, I think.

2) (side note) orphaned_uri_list doesn't seems to be used any more, so
should be removed.

Signed-off-by: Michele Morgan <mmorgan@noblenet.org>