Remove more statements from stats.sql

Some of the statements capturing stats reset timestamps have become
unnecessary after a9a8108, so let's remove them.

Author: Bharath Rupireddy
Discussion: https://postgr.es/m/CALj2ACUnvB_Yo=O1xApBa4CDqQpW-x=QM35GBN1MqVRAxAGXEg@mail.gmail.com

Author: michaelpq

src/test/regress/expected/stats.out

@@ -914,7 +914,6 @@ SELECT stats_reset > :'archiver_reset_ts'::timestamptz FROM pg_stat_archiver;
  t
 (1 row)
 
-SELECT stats_reset AS archiver_reset_ts FROM pg_stat_archiver \gset
 -- Test that reset_shared with bgwriter specified as the stats type works
 SELECT stats_reset AS bgwriter_reset_ts FROM pg_stat_bgwriter \gset
 SELECT pg_stat_reset_shared('bgwriter');
@@ -929,7 +928,6 @@ SELECT stats_reset > :'bgwriter_reset_ts'::timestamptz FROM pg_stat_bgwriter;
  t
 (1 row)
 
-SELECT stats_reset AS bgwriter_reset_ts FROM pg_stat_bgwriter \gset
 -- Test that reset_shared with checkpointer specified as the stats type works
 SELECT stats_reset AS checkpointer_reset_ts FROM pg_stat_checkpointer \gset
 SELECT pg_stat_reset_shared('checkpointer');
@@ -944,7 +942,6 @@ SELECT stats_reset > :'checkpointer_reset_ts'::timestamptz FROM pg_stat_checkpoi
  t
 (1 row)
 
-SELECT stats_reset AS checkpointer_reset_ts FROM pg_stat_checkpointer \gset
 -- Test that reset_shared with recovery_prefetch specified as the stats type works
 SELECT stats_reset AS recovery_prefetch_reset_ts FROM pg_stat_recovery_prefetch \gset
 SELECT pg_stat_reset_shared('recovery_prefetch');
@@ -959,7 +956,6 @@ SELECT stats_reset > :'recovery_prefetch_reset_ts'::timestamptz FROM pg_stat_rec
  t
 (1 row)
 
-SELECT stats_reset AS recovery_prefetch_reset_ts FROM pg_stat_recovery_prefetch \gset
 -- Test that reset_shared with slru specified as the stats type works
 SELECT max(stats_reset) AS slru_reset_ts FROM pg_stat_slru \gset
 SELECT pg_stat_reset_shared('slru');
@@ -974,7 +970,6 @@ SELECT max(stats_reset) > :'slru_reset_ts'::timestamptz FROM pg_stat_slru;
  t
 (1 row)
 
-SELECT max(stats_reset) AS slru_reset_ts FROM pg_stat_slru \gset
 -- Test that reset_shared with wal specified as the stats type works
 SELECT stats_reset AS wal_reset_ts FROM pg_stat_wal \gset
 SELECT pg_stat_reset_shared('wal');
@@ -989,7 +984,6 @@ SELECT stats_reset > :'wal_reset_ts'::timestamptz FROM pg_stat_wal;
  t
 (1 row)
 
-SELECT stats_reset AS wal_reset_ts FROM pg_stat_wal \gset
 -- Test error case for reset_shared with unknown stats type
 SELECT pg_stat_reset_shared('unknown');
 ERROR:  unrecognized reset target: "unknown"

src/test/regress/sql/stats.sql

@@ -462,37 +462,31 @@ SELECT stats_reset > :'slru_notify_reset_ts'::timestamptz FROM pg_stat_slru WHER
 SELECT stats_reset AS archiver_reset_ts FROM pg_stat_archiver \gset
 SELECT pg_stat_reset_shared('archiver');
 SELECT stats_reset > :'archiver_reset_ts'::timestamptz FROM pg_stat_archiver;
-SELECT stats_reset AS archiver_reset_ts FROM pg_stat_archiver \gset
 
 -- Test that reset_shared with bgwriter specified as the stats type works
 SELECT stats_reset AS bgwriter_reset_ts FROM pg_stat_bgwriter \gset
 SELECT pg_stat_reset_shared('bgwriter');
 SELECT stats_reset > :'bgwriter_reset_ts'::timestamptz FROM pg_stat_bgwriter;
-SELECT stats_reset AS bgwriter_reset_ts FROM pg_stat_bgwriter \gset
 
 -- Test that reset_shared with checkpointer specified as the stats type works
 SELECT stats_reset AS checkpointer_reset_ts FROM pg_stat_checkpointer \gset
 SELECT pg_stat_reset_shared('checkpointer');
 SELECT stats_reset > :'checkpointer_reset_ts'::timestamptz FROM pg_stat_checkpointer;
-SELECT stats_reset AS checkpointer_reset_ts FROM pg_stat_checkpointer \gset
 
 -- Test that reset_shared with recovery_prefetch specified as the stats type works
 SELECT stats_reset AS recovery_prefetch_reset_ts FROM pg_stat_recovery_prefetch \gset
 SELECT pg_stat_reset_shared('recovery_prefetch');
 SELECT stats_reset > :'recovery_prefetch_reset_ts'::timestamptz FROM pg_stat_recovery_prefetch;
-SELECT stats_reset AS recovery_prefetch_reset_ts FROM pg_stat_recovery_prefetch \gset
 
 -- Test that reset_shared with slru specified as the stats type works
 SELECT max(stats_reset) AS slru_reset_ts FROM pg_stat_slru \gset
 SELECT pg_stat_reset_shared('slru');
 SELECT max(stats_reset) > :'slru_reset_ts'::timestamptz FROM pg_stat_slru;
-SELECT max(stats_reset) AS slru_reset_ts FROM pg_stat_slru \gset
 
 -- Test that reset_shared with wal specified as the stats type works
 SELECT stats_reset AS wal_reset_ts FROM pg_stat_wal \gset
 SELECT pg_stat_reset_shared('wal');
 SELECT stats_reset > :'wal_reset_ts'::timestamptz FROM pg_stat_wal;
-SELECT stats_reset AS wal_reset_ts FROM pg_stat_wal \gset
 
 -- Test error case for reset_shared with unknown stats type
 SELECT pg_stat_reset_shared('unknown');