pgsql: Remove recheck_relation_needs_vacanalyze().

Remove recheck_relation_needs_vacanalyze().

This function is a thin wrapper around relation_needs_vacanalyze()
that handles fetching and freeing the pgstat entry for the table.
Since all callers of relation_needs_vacanalyze() do that anyway, we
can teach that function to fetch/free the pgstat entry and use it
instead.

Suggested-by: Álvaro Herrera <alvherre@kurilemu.de>
Author: Sami Imseih <samimseih@gmail.com>
Co-authored-by: Nathan Bossart <nathandbossart@gmail.com>
Discussion: https://postgr.es/m/CAA5RZ0s4xjMrB-VAnLccC7kY8d0-4806-Lsac-czJsdA1LXtAw%40mail.gmail.com

Branch
------
master

Details
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https://git.postgresql.org/pg/commitdiff/775fe51daaef9131c5a00447c0ea9ff36d6a2406

Modified Files
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src/backend/postmaster/autovacuum.c | 74 +++++++------------------------------
1 file changed, 14 insertions(+), 60 deletions(-)