pgsql: Remove pgcrypto functions that were deprecated and slated for

Log Message:
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Remove pgcrypto functions that were deprecated and slated for removal.
Marko Kreen

Modified Files:
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    pgsql/contrib/pgcrypto:
        README.pgcrypto (r1.17 -> r1.18)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/README.pgcrypto.diff?r1=1.17&r2=1.18)
        pgcrypto.c (r1.22 -> r1.23)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/pgcrypto.c.diff?r1=1.22&r2=1.23)
        pgcrypto.h (r1.10 -> r1.11)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/pgcrypto.h.diff?r1=1.10&r2=1.11)
        pgcrypto.sql.in (r1.13 -> r1.14)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/pgcrypto.sql.in.diff?r1=1.13&r2=1.14)
        uninstall_pgcrypto.sql (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/uninstall_pgcrypto.sql.diff?r1=1.1&r2=1.2)