MySQL bulk drop table where table like?

You can use prepared statements –

SET @tables = NULL;
SELECT GROUP_CONCAT('`', table_schema, '`.`', table_name,'`') INTO @tables FROM information_schema.tables 
  WHERE table_schema="myDatabase" AND table_name LIKE BINARY 'del%';

SET @tables = CONCAT('DROP TABLE ', @tables);
PREPARE stmt1 FROM @tables;
EXECUTE stmt1;
DEALLOCATE PREPARE stmt1;

It will generate and execute a statement like this –

DROP TABLE myDatabase.del1, myDatabase.del2, myDatabase.del3;