you have 2 options - maybe more, but i know just these
1. start your mysql server with this option "--safe-show-database"
2. edit /etc/my.cnf - in the mysqld section add "safe-show-database"
so it should look like this
[mysqld]
#your other options
safe-show-database
or instead of "safe-show-database" you could use "skip-show-database", this option prevents from displaying any databases, this returns nothing
hope that helps