When using K2 and removing/hiding all "Item view options" (such as print, email, hits, etc), the space where these options are ... is not collapsed, leading to a lot of unnecessary white space.
There is something strange on Your site. When I look into code I can see a a lot of line which doesn't come from template or K2. See screenshot.
Space is produced by page title which is empty for this page. You should try to disable showing pageheading in menu item settings for this page, becuase removing the title part may break other pages, but if You want to try here is a code: