MDEV-26521 Remove mdev-504.test

This stress tests fails on not sufficiently tweaked windows boxes,due
to rapid succession of connects and disconnects, making Windows run out
of ephemeral ports.

Approved by author of the test (the author is happy to see it removed)

mysql-test/r/mdev-504.result

-SET GLOBAL net_write_timeout = 900;
-CREATE TABLE A (
-pk INTEGER AUTO_INCREMENT PRIMARY KEY,
-fdate DATE
-) ENGINE=MyISAM;
-CREATE PROCEDURE p_analyze()
-BEGIN
-DECLARE attempts INTEGER DEFAULT 100;
-wl_loop: WHILE attempts > 0 DO
-ANALYZE TABLE A;
-SET attempts = attempts - 1;
-END WHILE wl_loop;
-END |
-CREATE FUNCTION rnd3() RETURNS INT
-BEGIN
-RETURN ROUND(3 * RAND() + 0.5);
-END |
-SET GLOBAL use_stat_tables = PREFERABLY;
-connection default;
-DROP TABLE A;
-DROP PROCEDURE p_analyze;
-DROP FUNCTION rnd3;
-SET GLOBAL use_stat_tables = DEFAULT;
-SET GLOBAL net_write_timeout = DEFAULT;

mysql-test/t/mdev-504.test

---source include/not_valgrind.inc
---source include/no_protocol.inc
-
-SET GLOBAL net_write_timeout = 900; 
-
-CREATE TABLE A (
-  pk INTEGER AUTO_INCREMENT PRIMARY KEY,
-  fdate DATE
-) ENGINE=MyISAM;
-
---delimiter |
-
-CREATE PROCEDURE p_analyze()
-BEGIN
-  DECLARE attempts INTEGER DEFAULT 100;
-  wl_loop: WHILE attempts > 0 DO
-    ANALYZE TABLE A;
-    SET attempts = attempts - 1;
-  END WHILE wl_loop;
-END |
-
-CREATE FUNCTION rnd3() RETURNS INT
-BEGIN
-  RETURN ROUND(3 * RAND() + 0.5);
-END |
-
---delimiter ;
-
-SET GLOBAL use_stat_tables = PREFERABLY;  
-
---let $trial = 100
-
---disable_query_log
---disable_result_log
---disable_warnings
-while ($trial)
-{
-
-  --connect (con1,localhost,root,,)
-  --send CALL p_analyze()
-
-  --connect (con2,localhost,root,,)
-  --send CALL p_analyze()
-
-  --let $run = 100
-
-  while ($run)
-  {
-    --connect (con3,localhost,root,,)
-  
-    let $query = `SELECT CASE rnd3() 
-      WHEN 1 THEN 'INSERT INTO A (pk) VALUES (NULL)'
-      WHEN 2 THEN 'DELETE FROM A LIMIT 1'
-      ELSE 'UPDATE IGNORE A SET fdate = 2 LIMIT 1' END`;
-    --eval $query
-    --disconnect con3
-    --dec $run
-  }
-
-  --connection con2
-  --reap
-  --disconnect con2
-  --connection con1
-  --reap
-  --disconnect con1
-
-  --dec $trial
-}
-
---enable_query_log
---enable_result_log
---enable_warnings
-
-# Cleanup
---connection default
-DROP TABLE A;
-DROP PROCEDURE p_analyze;
-DROP FUNCTION rnd3;
-SET GLOBAL use_stat_tables = DEFAULT;
-SET GLOBAL net_write_timeout = DEFAULT;

mysql-test/unstable-tests

@@ -77,7 +77,6 @@ main.lock_tables_lost_commit          : MDEV-24624 - Timeout
 main.lock_view                        : Modified in 10.2.37
 main.log_slow                         : MDEV-13263 - Wrong result
 main.log_tables-big                   : MDEV-13408 - wrong result
-main.mdev-504                         : MDEV-15171 - warning
 main.mdev375                          : MDEV-10607 - sporadic "can't connect"
 main.merge                            : MDEV-10607 - sporadic "can't connect"
 main.myisam                           : Modified in 10.2.37