pgsql: docs: remove outdated note about unique indexes

docs: remove outdated note about unique indexes

Patch by Josh Kupershmidt

Backpatch through 9.5

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/049a7799dfce096923da27a9b0e4a3c7a0a47104

Modified Files
--------------
doc/src/sgml/indices.sgml | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)

--
Sent via pgsql-committers mailing list (pgsql-committers@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-committers