Revert "Insert temporary debugging output in regression tests."

This reverts commit f03a9ca,
in the v12 branch only.  We don't want to ship v12 with that,
since it causes occasional test failures (as a result of statistics
transmission not being entirely reliable).

I'll leave it in HEAD though, in hopes that we'll eventually
capture an instance of the original problematic behavior.

Author: tglsfdc

src/test/regress/expected/select_parallel.out

@@ -89,33 +89,6 @@ select round(avg(aa)), sum(aa) from a_star a3;
     14 | 355
 (1 row)
 
--- Temporary hack to investigate whether extra vacuum/analyze is happening
-select relname, relpages, reltuples
-from pg_class
-where relname like '__star' order by relname;
- relname | relpages | reltuples 
----------+----------+-----------
- a_star  |        1 |         3
- b_star  |        1 |         4
- c_star  |        1 |         4
- d_star  |        1 |        16
- e_star  |        1 |         7
- f_star  |        1 |        16
-(6 rows)
-
-select relname, vacuum_count, analyze_count, autovacuum_count, autoanalyze_count
-from pg_stat_all_tables
-where relname like '__star' order by relname;
- relname | vacuum_count | analyze_count | autovacuum_count | autoanalyze_count 
----------+--------------+---------------+------------------+-------------------
- a_star  |            1 |             0 |                0 |                 0
- b_star  |            1 |             0 |                0 |                 0
- c_star  |            1 |             0 |                0 |                 0
- d_star  |            1 |             0 |                0 |                 0
- e_star  |            1 |             0 |                0 |                 0
- f_star  |            1 |             0 |                0 |                 0
-(6 rows)
-
 -- Disable Parallel Append
 alter table a_star reset (parallel_workers);
 alter table b_star reset (parallel_workers);

src/test/regress/expected/stats.out

@@ -199,33 +199,6 @@ FROM prevstats AS pr;
  t
 (1 row)
 
--- Temporary hack to investigate whether extra vacuum/analyze is happening
-select relname, relpages, reltuples
-from pg_class
-where relname like '__star' order by relname;
- relname | relpages | reltuples 
----------+----------+-----------
- a_star  |        1 |         3
- b_star  |        1 |         4
- c_star  |        1 |         4
- d_star  |        1 |        16
- e_star  |        1 |         7
- f_star  |        1 |        16
-(6 rows)
-
-select relname, vacuum_count, analyze_count, autovacuum_count, autoanalyze_count
-from pg_stat_all_tables
-where relname like '__star' order by relname;
- relname | vacuum_count | analyze_count | autovacuum_count | autoanalyze_count 
----------+--------------+---------------+------------------+-------------------
- a_star  |            1 |             0 |                0 |                 0
- b_star  |            1 |             0 |                0 |                 0
- c_star  |            1 |             0 |                0 |                 0
- d_star  |            1 |             0 |                0 |                 0
- e_star  |            1 |             0 |                0 |                 0
- f_star  |            1 |             0 |                0 |                 0
-(6 rows)
-
 DROP TABLE trunc_stats_test, trunc_stats_test1, trunc_stats_test2, trunc_stats_test3, trunc_stats_test4;
 DROP TABLE prevstats;
 -- End of Stats Test

src/test/regress/sql/select_parallel.sql

@@ -36,14 +36,6 @@ explain (costs off)
   select round(avg(aa)), sum(aa) from a_star;
 select round(avg(aa)), sum(aa) from a_star a3;
 
--- Temporary hack to investigate whether extra vacuum/analyze is happening
-select relname, relpages, reltuples
-from pg_class
-where relname like '__star' order by relname;
-select relname, vacuum_count, analyze_count, autovacuum_count, autoanalyze_count
-from pg_stat_all_tables
-where relname like '__star' order by relname;
-
 -- Disable Parallel Append
 alter table a_star reset (parallel_workers);
 alter table b_star reset (parallel_workers);

src/test/regress/sql/stats.sql

@@ -174,14 +174,6 @@ SELECT st.heap_blks_read + st.heap_blks_hit >= pr.heap_blks + cl.relpages,
 SELECT pr.snap_ts < pg_stat_get_snapshot_timestamp() as snapshot_newer
 FROM prevstats AS pr;
 
--- Temporary hack to investigate whether extra vacuum/analyze is happening
-select relname, relpages, reltuples
-from pg_class
-where relname like '__star' order by relname;
-select relname, vacuum_count, analyze_count, autovacuum_count, autoanalyze_count
-from pg_stat_all_tables
-where relname like '__star' order by relname;
-
 DROP TABLE trunc_stats_test, trunc_stats_test1, trunc_stats_test2, trunc_stats_test3, trunc_stats_test4;
 DROP TABLE prevstats;
 -- End of Stats Test