MDEV-6720 - enable connection log in mysqltest by default

mysql-test/suite/rpl/include/rpl_mixed_check_user.inc

@@ -5,10 +5,8 @@
 # Requirements: 
 #########################################
 
---echo ==========MASTER==========
 SELECT host, user, password, select_priv FROM mysql.user WHERE user LIKE 'user_test_rpl%';
 sync_slave_with_master;
---echo ==========SLAVE===========
 USE test_rpl;
 SELECT host, user, password, select_priv FROM mysql.user WHERE user LIKE 'user_test_rpl%';
 connection master;