I am trying to remove a block named catalog.leftnav. After reading this- https://stackoverflow.com/questions/16937018/magento-remove-block-using-update-xml
I created a local.xml file and put this in there-
<?xml version="1.0" encoding="UTF-8"?>
<layout>
<default>
<remove name="catalog.leftnav" />
</default>
</layout>
I added it into frontend/default/themename/layout
What am I missing?