Bug#26793 mysqld crashes when doing specific query on information_schema

- Drop the newly created user user1@localhost
 - Cleanup testcase

mysql-test/r/ndb_bug26793.result

@@ -3,11 +3,6 @@ CREATE TABLE `test` (
 `id` INT NOT NULL AUTO_INCREMENT PRIMARY KEY ,
 `t` VARCHAR( 10 ) NOT NULL
 ) ENGINE = ndbcluster;
-create table test.db_temp as select * from mysql.db where user='';
-delete from mysql.db where user='';
-flush privileges;
 GRANT USAGE ON *.* TO user1@localhost IDENTIFIED BY 'pass';
 DROP TABLE `test`.`test`;
-insert into mysql.db select * from test.db_temp;
-drop table db_temp;
-flush privileges;
+drop user user1@localhost;