1 files changed, 0 insertions, 12 deletions
diff --git a/mysql-test/t/group_by.test b/mysql-test/t/group_by.test
index 8a514108dc3..ce1e4e59600 100644
--- a/mysql-test/t/group_by.test
+++ b/mysql-test/t/group_by.test
@@ -655,15 +655,3 @@ where t2.b=v1.a GROUP BY t2.b;
 
 DROP VIEW v1;
 DROP TABLE t1,t2;
-
-#
-# Bug #21174: Index degrades sort performance and 
-#             optimizer does not honor IGNORE INDEX
-#
-CREATE TABLE t1 (a INT, b INT, KEY(a));
-INSERT INTO t1 VALUES (1, 1), (2, 2), (3,3), (4,4);
-
-EXPLAIN SELECT a, SUM(b) FROM t1 GROUP BY a LIMIT 2; 
-EXPLAIN SELECT a, SUM(b) FROM t1 IGNORE INDEX (a) GROUP BY a LIMIT 2;
-
-DROP TABLE t1;