MDEV-13792: innodb.purge_thread_shutdown failed in buildbot with wrong result (sporadic)

Omit `state` when selecting processlist to verify which threads are running.
The state changes as threads are running (enter_state()), and this causes
sporadic test failures.
Signed-off-by: Kristian Nielsen <knielsen@knielsen-hq.org>

mysql-test/suite/innodb/r/purge_thread_shutdown.result

@@ -2,32 +2,32 @@ connect con1, localhost, root;
 create table t1 (a int) engine=innodb;
 insert t1 values (1),(2),(3),(4);
 delete from t1 where a=1;
-select user,state from information_schema.processlist order by 2;
-user	state
+select user from information_schema.processlist order by 1;
+user
 root
-root	Filling schema table
-system user	InnoDB purge coordinator
-system user	InnoDB purge worker
-system user	InnoDB purge worker
-system user	InnoDB purge worker
-system user	InnoDB shutdown handler
+root
+system user
+system user
+system user
+system user
+system user
 set global debug_dbug='+d,only_kill_system_threads';
 set global innodb_fast_shutdown=0;
 shutdown;
 connection default;
 disconnect con1;
-select user,state from information_schema.processlist order by 2;
-user	state
-root	Filling schema table
-system user	InnoDB purge coordinator
-system user	InnoDB purge worker
-system user	InnoDB purge worker
-system user	InnoDB purge worker
-system user	InnoDB slow shutdown wait
+select user from information_schema.processlist order by 1;
+user
+root
+system user
+system user
+system user
+system user
+system user
 set global innodb_fast_shutdown=1;
-select user,state from information_schema.processlist order by 2;
-user	state
-root	Filling schema table
+select user from information_schema.processlist order by 1;
+user
+root
 delete from t1 where a=3;
 set global innodb_fast_shutdown=0;
 ERROR 42000: Variable 'innodb_fast_shutdown' can't be set to the value of '0'

mysql-test/suite/innodb/t/purge_thread_shutdown.test

@@ -7,7 +7,7 @@ create table t1 (a int) engine=innodb;
 insert t1 values (1),(2),(3),(4);
 delete from t1 where a=1;
 
-select user,state from information_schema.processlist order by 2;
+select user from information_schema.processlist order by 1;
 
 set global debug_dbug='+d,only_kill_system_threads';
 set global innodb_fast_shutdown=0;
@@ -21,12 +21,12 @@ connection default;
 disconnect con1;
 
 sleep 5;
-select user,state from information_schema.processlist order by 2;
+select user from information_schema.processlist order by 1;
 set global innodb_fast_shutdown=1;
 
 let $wait_condition=select count(*) = 0 from information_schema.processlist where user='system user';
 source include/wait_condition.inc;
-select user,state from information_schema.processlist order by 2;
+select user from information_schema.processlist order by 1;
 
 delete from t1 where a=3;
 error ER_WRONG_VALUE_FOR_VAR;