pgsql: doc: remove mention of the DMOZ catalog in ltree docs

doc: remove mention of the DMOZ catalog in ltree docs

Discussion: /messages/by-id/CAF4Au4xYem_W3KOuxcKct7=G4j8Z3uO9j3DUKTFJqUsfp_9pQg@mail.gmail.com

Author: Oleg Bartunov

Backpatch-through: 9.3

Branch
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REL9_3_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/d2c9737bc8bbde3f6d19333f9db0727a4e93f44d

Modified Files
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doc/src/sgml/ltree.sgml | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)