Hi,
To to that, please go to the file app\design\frontend\default\sns_ostore\layout\catalog.xml, find and replace the code
<block type="ostore/navigation" name="catalog.snsnavigation" after="currency" template="sns/blocks/navigation.phtml"/>
By:
<!-- <block type="ostore/navigation" name="catalog.snsnavigation" after="currency" template="sns/blocks/navigation.phtml"/> -->
Thanks,
