pgsql: Remove references to PostgreSQL bundled on Solaris

Remove references to PostgreSQL bundled on Solaris

Also remove special references to downloads off pgfoundry since they are
not correct - downloads are done through the main website.

Branch
------
REL9_2_STABLE

Details
-------
http://git.postgresql.org/pg/commitdiff/a963e06c0c046a3408c4c11e794d39b2a9046ab4

Modified Files
--------------
doc/src/sgml/installation.sgml | 9 ---------
1 files changed, 0 insertions(+), 9 deletions(-)