pgsql: Revert "Silence compiler warning"

Revert "Silence compiler warning"

This reverts commit 9dc122585551516309c9362e673effdbf3bd79bd.

As committed, statement sampling used the existing duration threshold
(log_min_duration_statement) when decide which statements to sample.
The issue is that even the longest statements are subject to sampling,
and so may not end up logged. An improvement was proposed, introducing
a second duration threshold, but it would not be backwards compatible.
So we've decided to revert this feature - the separate threshold should
be part of the feature itself.

Discussion: https://postgr.es/m/CAFj8pRDS8tQ3Wviw9%3DAvODyUciPSrGeMhJi_WPE%2BEB8%2B4gLL-Q%40mail.gmail.com

Branch
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REL_12_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/d8453ccfbfd6bb1782e71beb28acf4025a9a01ce

Modified Files
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src/backend/tcop/postgres.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)