[Plugin: WP-PostViews] how can i delete the postview data

dear !
i have used postview for my site at http://www.frivfriv.mobi
but now i chance it’s theme and all of the last games before is missing!
i want to delete the postview data of them to show the new postview data
of new games!
you can see the widget the Most Played Games, this is the old data!
thanks so much

http://wordpress.org/extend/plugins/wp-postviews/

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