Form Helper Dropdown - remove search box [NOT OFFICIAL CI TOPIC]

[eluser]Unknown[/eluser]
I can't find out how to remove the search box from the dropdown helper, without affecting the core (not that I tried that... I can't take that route).

Anyone know of an attribute for:
echo form_dropdown('name', $options);
?

EDIT:
Just learned that the framework I use is not the official CI, but the one forked off by Phil the Philanderer. Thanks again Phil.