pgsql: Remove unnecessary TYPECACHE_GT_OPR lookup

Remove unnecessary TYPECACHE_GT_OPR lookup

The TYPECACHE_GT_OPR is not needed (it used to be in older version of
the MCV code), but the compiler failed to detect this as the result was
used in a fmgr_info() call, populating a FmgrInfo entry.

Backpatch to v12, where this code was introduced.

Discussion: https://postgr.es/m/8736jdhbhc.fsf%40ansel.ydns.eu
Backpatch-to: 12

Branch
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REL_12_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/3944e855bc5bee32d99a9ba2245a026d4bafe282

Modified Files
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src/backend/statistics/mcv.c | 6 ------
1 file changed, 6 deletions(-)