You will need to add some CSS for it. Give link to the page where you want the border to be removed so that someone can suggest CSS to achieve that.
please post a link to the page in question.
http://xn--sprjtestbt-produktion-sfcf.dk/plastmaterialer-tekniske-egenskaber-prisberegning/
[moderated: large paste deleted. Please use pastebin.com or gist.github.com for large pastes.]
add this CSS to your site:
th, td, table { border: none; }
If Easy Table supports custom CSS, add it there (or see if it has an option to disable borders. If not, install the plugin “simple custom CSS” and add it there.
It work with “simple custom CSS”
1000 thanks for your help