pgsql: Remove false comment about speculative insertion.

Remove false comment about speculative insertion.

There is no full discussion of speculative insertions in the executor
README. There is a high-level explanation in execIndexing.c, but it doesn't
seem necessary to refer it from here.

Peter Geoghegan

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/e3a9a194b7cb70a8c01deeff9f876a2631f1be06

Modified Files
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src/backend/executor/nodeModifyTable.c |    3 +--
1 file changed, 1 insertion(+), 2 deletions(-)