pgsql: Remove unused xl_heap_prune member, reason

Remove unused xl_heap_prune member, reason

f83d709760d8 refactored xl_heap_prune and added an unused member,
reason. While PruneReason is used when constructing this WAL record to
set the WAL record definition, it doesn't need to be stored in a
separate field in the record. Remove it.

We won't backport this, since modifying an exposed struct definition to
remove an unused field would do more harm than good.

Author: Melanie Plageman <melanieplageman(at)gmail(dot)com>
Reported-by: Andres Freund <andres(at)anarazel(dot)de>
Reviewed-by: Robert Haas <robertmhaas(at)gmail(dot)com>

Discussion: https://postgr.es/m/tvvtfoxz5ykpsctxjbzxg3nldnzfc7geplrt2z2s54pmgto27y%40hbijsndifu45

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/4b5f206de2bb9152a99a5c218caf2580cc5a0e9e

Modified Files
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src/include/access/heapam_xlog.h | 1 -
1 file changed, 1 deletion(-)