WL#3754, rpl_ndb_circular_2ch test disabled

mysql-test/suite/rpl_ndb/r/rpl_ndb_circular_2ch.result:
  updated result
mysql-test/suite/rpl_ndb/t/disabled.def:
  updated disabled list
mysql-test/suite/rpl_ndb/t/rpl_ndb_circular_2ch.test:
  updated test

mysql-test/suite/rpl_ndb/r/rpl_ndb_circular_2ch.result

@@ -98,5 +98,5 @@ COUNT(*)	SUM(a)	b
 100	64000	slave
 
 DROP TABLE t1;
-DROP TABLE t1;
+DROP TABLE IF EXISTS t1;
 

mysql-test/suite/rpl_ndb/t/disabled.def

@@ -12,5 +12,5 @@
 
 rpl_ndb_circular         : Bug#33849 COMMIT event missing in cluster circular replication.
 rpl_ndb_circular_simplex : Bug#33849 COMMIT event missing in cluster circular replication.
-
+rpl_ndb_circular_2ch	 : Bug#33849 COMMIT event missing in cluster circular replication.
 # the below testcase have been reworked to avoid the bug, test contains comment, keep bug open

mysql-test/suite/rpl_ndb/t/rpl_ndb_circular_2ch.test

@@ -172,7 +172,9 @@ SELECT COUNT(*), SUM(a), b FROM t1 WHERE c = 3 GROUP BY b ORDER BY b;
 --connection master
 DROP TABLE t1;
 --connection slave
-DROP TABLE t1;
+--disable_warings
+DROP TABLE IF EXISTS t1;
+--enable_warnings
 --echo
 
 # End of test 5.1