Fix ndb_dd_ddl.test: drop created database after use.

Author: Alexander Nozdrin

mysql-test/suite/ndb/r/ndb_dd_ddl.result

@@ -308,6 +308,7 @@ ENGINE = NDB;
 
 DROP USER mysqltest_u1@localhost;
 DROP USER mysqltest_u2@localhost;
+DROP DATABASE mysqltest2;
 
 # -----------------------------------------------------------------
 # End 6.0 test

mysql-test/suite/ndb/t/ndb_dd_ddl.test

@@ -463,6 +463,8 @@ ENGINE = NDB;
 DROP USER mysqltest_u1@localhost;
 DROP USER mysqltest_u2@localhost;
 
+DROP DATABASE mysqltest2;
+
 --echo
 --echo # -----------------------------------------------------------------
 --echo # End 6.0 test