pgsql: Remove very-obsolete estimates of shmem usage from postgresql.co

Remove very-obsolete estimates of shmem usage from postgresql.conf.sample.

runtime.sgml used to contain a table of estimated shared memory consumption
rates for max_connections and some other GUCs.  Commit 390bfc643 removed
that on the well-founded grounds that (a) we weren't maintaining the
entries well and (b) it no longer mattered so much once we got out from
under SysV shmem limits.  But it missed that there were even-more-obsolete
versions of some of those numbers in comments in postgresql.conf.sample.
Remove those too.  Back-patch to 9.3 where the aforesaid commit went in.

Branch
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REL9_3_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/5e7fc462904c7deccead7c8d6ba0147998218d9d

Modified Files
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src/backend/utils/misc/postgresql.conf.sample | 11 ++---------
1 file changed, 2 insertions(+), 9 deletions(-)