pgsql: Revert "Flush Memoize cache when non-key parameters change"

Revert "Flush Memoize cache when non-key parameters change"

This reverts commit f94edb06ab60545a0e9e90aedc39e3b81b2b9e3f.

Branch
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REL_14_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/7933bc0d13616844ed66271942eac12c3a7f0488

Modified Files
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src/backend/executor/nodeMemoize.c      | 38 --------------------------------
src/backend/nodes/bitmapset.c           |  2 --
src/backend/optimizer/plan/createplan.c | 10 +++------
src/backend/optimizer/util/clauses.c    | 31 --------------------------
src/include/nodes/execnodes.h           |  2 --
src/include/nodes/plannodes.h           |  1 -
src/include/optimizer/clauses.h         |  2 --
src/test/regress/expected/memoize.out   | 39 ---------------------------------
src/test/regress/sql/memoize.sql        | 20 -----------------
9 files changed, 3 insertions(+), 142 deletions(-)