pgsql: Remove useless (and broken) logging logic in memory context func

Remove useless (and broken) logging logic in memory context functions.

Nobody really uses this stuff, especially not since we created
valgrind-based infrastructure that does the same thing better.
It is thus unsurprising that the generation.c and slab.c versions
were actually broken.  Rather than fix 'em, let's just remove 'em.

Alexander Lakhin

Discussion: https://postgr.es/m/8936216c-3492-3f6e-634b-d638fddc5f91@gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/ee88ef55dbacfca15ad425e849280669e3d6ee4d

Modified Files
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src/backend/utils/mmgr/aset.c       | 26 --------------------------
src/backend/utils/mmgr/generation.c | 20 --------------------
src/backend/utils/mmgr/slab.c       | 20 --------------------
3 files changed, 66 deletions(-)