Edit publisher field in KLC

Hi

I have a KLC and would like to change the display of the published date format in the book details page to yyyy from ddmmyy as it is currently.

I've created a metaboard plugin with this template program: {publisher}, {:'format_date(raw_field('pubdate'),'yyyy')'}. I now have the publication date appear in the yyyy format I would prefer but this info is dupicated in mmddyy format i.e. for one book I have '1908, (1/1/08)'.

I would like to delete the part in brackets

Would greatly appreciate any help at all. Thank you